1997 Ford Ranger 4.0 liter OHV engine TDC questions/struggles.
#1
#7
I put a long, slender screwdriver into the spark plug hole in an engine once to watch it rise as I cranked the engine over to TDC. There was no chance of any binding or cylinder wall scratching.
However, this was an upright 4 cylinder engine. The V configuration will work against you a bit but you know what I'm describing.
Get a wooden dowel just a bit smaller than the spark plug hole (to hold it straight) and see if you can see it (mirror?) be pushed out the hole.
Put inch dashes on the wood with a Sharpie
However, this was an upright 4 cylinder engine. The V configuration will work against you a bit but you know what I'm describing.
Get a wooden dowel just a bit smaller than the spark plug hole (to hold it straight) and see if you can see it (mirror?) be pushed out the hole.
Put inch dashes on the wood with a Sharpie
#8
RF Veteran
iTrader: (1)
Pull out all 6 spark plugs
Turn crank manually, clockwise, it should turn freely/easily with no compression on any cylinder, spin it at least 2 full turns
Put #1 spark plug back in, finger tight
Turn crank manually until you feel the resistance of compression, continue to turn until mark on pulley is aligned with pointer on front cover
You are at #1 TDC compression stroke
If you are not sure repeat, you WILL FEEL the resistance
For other cylinders
Its a V6 engine, so 1 of its cylinders will be at its TDC Compression stroke every 120deg, 360deg in a circle, so cut "the pie"(the crank pulley) into 3 sections
Like this: https://etc.usf.edu/clipart/40500/40...a_40529_lg.gif
One of the lines already has a mark on the pulley, #1 TDC mark(its also for #5)
Use a piece of tape to mark other 2 lines/slices of pie on the crank pulley, so pulley now has 3 "marks" 120deg apart
Put a spark plug in any cylinder you wish to find TDC Compression stroke(all other spark plugs need to be removed)
Turn crank clockwise until you FEEL the resistance
Continue to turn until you are lined up with the next "mark" on the pulley and the pointer on front cover
You are at TDC Compression stroke for the cylinder with spark plug in it, 100% for sure
Turn crank manually, clockwise, it should turn freely/easily with no compression on any cylinder, spin it at least 2 full turns
Put #1 spark plug back in, finger tight
Turn crank manually until you feel the resistance of compression, continue to turn until mark on pulley is aligned with pointer on front cover
You are at #1 TDC compression stroke
If you are not sure repeat, you WILL FEEL the resistance
For other cylinders
Its a V6 engine, so 1 of its cylinders will be at its TDC Compression stroke every 120deg, 360deg in a circle, so cut "the pie"(the crank pulley) into 3 sections
Like this: https://etc.usf.edu/clipart/40500/40...a_40529_lg.gif
One of the lines already has a mark on the pulley, #1 TDC mark(its also for #5)
Use a piece of tape to mark other 2 lines/slices of pie on the crank pulley, so pulley now has 3 "marks" 120deg apart
Put a spark plug in any cylinder you wish to find TDC Compression stroke(all other spark plugs need to be removed)
Turn crank clockwise until you FEEL the resistance
Continue to turn until you are lined up with the next "mark" on the pulley and the pointer on front cover
You are at TDC Compression stroke for the cylinder with spark plug in it, 100% for sure
#9
Pull out all 6 spark plugs
Turn crank manually, clockwise, it should turn freely/easily with no compression on any cylinder, spin it at least 2 full turns
Put #1 spark plug back in, finger tight
Turn crank manually until you feel the resistance of compression, continue to turn until mark on pulley is aligned with pointer on front cover
You are at #1 TDC compression stroke
If you are not sure repeat, you WILL FEEL the resistance
For other cylinders
Its a V6 engine, so 1 of its cylinders will be at its TDC Compression stroke every 120deg, 360deg in a circle, so cut "the pie"(the crank pulley) into 3 sections
Like this: https://etc.usf.edu/clipart/40500/40...a_40529_lg.gif
One of the lines already has a mark on the pulley, #1 TDC mark(its also for #5)
Use a piece of tape to mark other 2 lines/slices of pie on the crank pulley, so pulley now has 3 "marks" 120deg apart
Put a spark plug in any cylinder you wish to find TDC Compression stroke(all other spark plugs need to be removed)
Turn crank clockwise until you FEEL the resistance
Continue to turn until you are lined up with the next "mark" on the pulley and the pointer on front cover
You are at TDC Compression stroke for the cylinder with spark plug in it, 100% for sure
Turn crank manually, clockwise, it should turn freely/easily with no compression on any cylinder, spin it at least 2 full turns
Put #1 spark plug back in, finger tight
Turn crank manually until you feel the resistance of compression, continue to turn until mark on pulley is aligned with pointer on front cover
You are at #1 TDC compression stroke
If you are not sure repeat, you WILL FEEL the resistance
For other cylinders
Its a V6 engine, so 1 of its cylinders will be at its TDC Compression stroke every 120deg, 360deg in a circle, so cut "the pie"(the crank pulley) into 3 sections
Like this: https://etc.usf.edu/clipart/40500/40...a_40529_lg.gif
One of the lines already has a mark on the pulley, #1 TDC mark(its also for #5)
Use a piece of tape to mark other 2 lines/slices of pie on the crank pulley, so pulley now has 3 "marks" 120deg apart
Put a spark plug in any cylinder you wish to find TDC Compression stroke(all other spark plugs need to be removed)
Turn crank clockwise until you FEEL the resistance
Continue to turn until you are lined up with the next "mark" on the pulley and the pointer on front cover
You are at TDC Compression stroke for the cylinder with spark plug in it, 100% for sure
Is there a good write up on this forum about performing an intake manifold gasket set job? I am needing to do such....
#11
RF Veteran
iTrader: (1)
Clean the head surfaces and lower intake surfaces
A tube of RTV sealant should come with lower gasket set, of not you will need some
The silicone/sealant is applied to the block between the heads at the back and front, a thick bead, there is no "pressure" in this area, the valley, seal just prevents blow-by and any oil vapour from coming out from the ends of the lower intakes seal to block
Put a thin layer of sealant on the heads around the coolant passages and intake valve passages, this will hold the gasket in place, install gasket(s), some are one piece others are 2 pieces
Flip intake up side down and do the same thin layer of sealant on the passages
Sealant bead is already applied to block at both ends, right, lol
Lower intake into place
I would use Blue Loctite(low strength) on the lower intake bolts as they like to loosen up
Lower intake tightening sequence is a bit different, most sequences do center out crisscross, this is edge to center crisscross
3..5..7..2
1..6..8..4
Tighten to 8ft/lb first time around then to 14ft/lb as final
Upper intake just has 6 studs/nuts, start at the center and crisscross, 10ft/lb then 18ft/lb, shouldn't need any sealant here
Check the lower intake bolts for tightness after a few weeks of operation, as said the like to loosen up
A tube of RTV sealant should come with lower gasket set, of not you will need some
The silicone/sealant is applied to the block between the heads at the back and front, a thick bead, there is no "pressure" in this area, the valley, seal just prevents blow-by and any oil vapour from coming out from the ends of the lower intakes seal to block
Put a thin layer of sealant on the heads around the coolant passages and intake valve passages, this will hold the gasket in place, install gasket(s), some are one piece others are 2 pieces
Flip intake up side down and do the same thin layer of sealant on the passages
Sealant bead is already applied to block at both ends, right, lol
Lower intake into place
I would use Blue Loctite(low strength) on the lower intake bolts as they like to loosen up
Lower intake tightening sequence is a bit different, most sequences do center out crisscross, this is edge to center crisscross
3..5..7..2
1..6..8..4
Tighten to 8ft/lb first time around then to 14ft/lb as final
Upper intake just has 6 studs/nuts, start at the center and crisscross, 10ft/lb then 18ft/lb, shouldn't need any sealant here
Check the lower intake bolts for tightness after a few weeks of operation, as said the like to loosen up
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seanagins (09-03-2023)
#12
Clean the head surfaces and lower intake surfaces
A tube of RTV sealant should come with lower gasket set, of not you will need some
The silicone/sealant is applied to the block between the heads at the back and front, a thick bead, there is no "pressure" in this area, the valley, seal just prevents blow-by and any oil vapour from coming out from the ends of the lower intakes seal to block
Put a thin layer of sealant on the heads around the coolant passages and intake valve passages, this will hold the gasket in place, install gasket(s), some are one piece others are 2 pieces
Flip intake up side down and do the same thin layer of sealant on the passages
Sealant bead is already applied to block at both ends, right, lol
Lower intake into place
I would use Blue Loctite(low strength) on the lower intake bolts as they like to loosen up
Lower intake tightening sequence is a bit different, most sequences do center out crisscross, this is edge to center crisscross
3..5..7..2
1..6..8..4
Tighten to 8ft/lb first time around then to 14ft/lb as final
Upper intake just has 6 studs/nuts, start at the center and crisscross, 10ft/lb then 18ft/lb, shouldn't need any sealant here
Check the lower intake bolts for tightness after a few weeks of operation, as said the like to loosen up
A tube of RTV sealant should come with lower gasket set, of not you will need some
The silicone/sealant is applied to the block between the heads at the back and front, a thick bead, there is no "pressure" in this area, the valley, seal just prevents blow-by and any oil vapour from coming out from the ends of the lower intakes seal to block
Put a thin layer of sealant on the heads around the coolant passages and intake valve passages, this will hold the gasket in place, install gasket(s), some are one piece others are 2 pieces
Flip intake up side down and do the same thin layer of sealant on the passages
Sealant bead is already applied to block at both ends, right, lol
Lower intake into place
I would use Blue Loctite(low strength) on the lower intake bolts as they like to loosen up
Lower intake tightening sequence is a bit different, most sequences do center out crisscross, this is edge to center crisscross
3..5..7..2
1..6..8..4
Tighten to 8ft/lb first time around then to 14ft/lb as final
Upper intake just has 6 studs/nuts, start at the center and crisscross, 10ft/lb then 18ft/lb, shouldn't need any sealant here
Check the lower intake bolts for tightness after a few weeks of operation, as said the like to loosen up
I am at the fuel rail. What is the best way of going about removing the fuel rail? Disconnecting the fuel lines at the quick connects?
#13
RF Veteran
iTrader: (1)
Yes, you can get an AC/Fuel line disconnect set pretty cheap like these: https://m.media-amazon.com/images/I/..._AC_UL400_.jpg
Got a set years ago and no complaints...................yet, lol
Got a set years ago and no complaints...................yet, lol
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seanagins (09-03-2023)
#14
Yes, you can get an AC/Fuel line disconnect set pretty cheap like these: https://m.media-amazon.com/images/I/..._AC_UL400_.jpg
Got a set years ago and no complaints...................yet, lol
Got a set years ago and no complaints...................yet, lol
Thank you for your time and efforts for communicating and typing up everything. I really appreciate it.
#15
Clean the head surfaces and lower intake surfaces
A tube of RTV sealant should come with lower gasket set, of not you will need some
The silicone/sealant is applied to the block between the heads at the back and front, a thick bead, there is no "pressure" in this area, the valley, seal just prevents blow-by and any oil vapour from coming out from the ends of the lower intakes seal to block
Put a thin layer of sealant on the heads around the coolant passages and intake valve passages, this will hold the gasket in place, install gasket(s), some are one piece others are 2 pieces
Flip intake up side down and do the same thin layer of sealant on the passages
Sealant bead is already applied to block at both ends, right, lol
Lower intake into place
I would use Blue Loctite(low strength) on the lower intake bolts as they like to loosen up
Lower intake tightening sequence is a bit different, most sequences do center out crisscross, this is edge to center crisscross
3..5..7..2
1..6..8..4
Tighten to 8ft/lb first time around then to 14ft/lb as final
Upper intake just has 6 studs/nuts, start at the center and crisscross, 10ft/lb then 18ft/lb, shouldn't need any sealant here
Check the lower intake bolts for tightness after a few weeks of operation, as said the like to loosen up
A tube of RTV sealant should come with lower gasket set, of not you will need some
The silicone/sealant is applied to the block between the heads at the back and front, a thick bead, there is no "pressure" in this area, the valley, seal just prevents blow-by and any oil vapour from coming out from the ends of the lower intakes seal to block
Put a thin layer of sealant on the heads around the coolant passages and intake valve passages, this will hold the gasket in place, install gasket(s), some are one piece others are 2 pieces
Flip intake up side down and do the same thin layer of sealant on the passages
Sealant bead is already applied to block at both ends, right, lol
Lower intake into place
I would use Blue Loctite(low strength) on the lower intake bolts as they like to loosen up
Lower intake tightening sequence is a bit different, most sequences do center out crisscross, this is edge to center crisscross
3..5..7..2
1..6..8..4
Tighten to 8ft/lb first time around then to 14ft/lb as final
Upper intake just has 6 studs/nuts, start at the center and crisscross, 10ft/lb then 18ft/lb, shouldn't need any sealant here
Check the lower intake bolts for tightness after a few weeks of operation, as said the like to loosen up
#16
RF Veteran
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seanagins (09-03-2023)
#17
I am attempting to replace the fuel injector o rings while I have the manifold off. The injectors are stuck in the lower intake manifold and I can't get them out even after soaking in PB blaster to try to free the injectors up from the lower intake manifold, but to no avail. What is the best method to removing a seized/stuck fuel injector in the lower intake manifold?
#18
RF Veteran
iTrader: (1)
#19
I am puzzled to as why in the fel pro intake manifold gasket set to as why I have two paper upper intake manifold gaskets and 6 o ring type gaskets.... I only pulled off one paper upper intake manifold gasket during disassembly... help? please.
#20
RF Veteran
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#21
I did remove the fuel rail from lower intake manifold to service the fuel injector o rings and the upper intake manifold still has the o ring type gaskets recessed into the plenum, were they should be.... I was just confused when the set included two of the fiber/paper type gaskets, that looks like I only need to utilize one and the o rings? Or utilize both fiber/paper gaskets and o ring type gaskets??
#22
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seanagins (09-10-2023)
#23
I am putting it all back together and I am struggling figuring out the throttle cable and cruise control cable ends were they clip on to the throttle body on the upper intake manifold. Is there a good picture of how these cables ends should clip together and on the throttle body? A good write up/tutorial? Youtube video? I am embarrassed...
#24
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seanagins (09-17-2023)