I need your help
#3
04-03-2017
Thread Starter
|
Member
Joined: Mar 2017
Posts: 4
Likes: 0
From: Lake city,Florida
I am getting codes P104 manufacturer controlled auxiliary emission controls and P0300 random multiple cylinder misfire. Any advice on these codes.
#4
04-03-2017
Member
Joined: Nov 2015
Posts: 1,635
Likes: 3
From: Evansville, Indiana
I can't speak on p104, but p0300 is a different story.
You'll want to look at things that can effect ALL the cylinders. The main fuel line and fuel rail all the way back to the pump, as well as the air filter to the throttle body.
On a cold engine, I'd pull out all the plugs and see what you have. If they're worn, replace 'em, if not, then cool. The color of the plug will tell you a lot about how it's running. Real sooty means rich, and if they're real clean that's lean. A mid-dark brown is about the color the porciline should be. The coil pack could also be crapping out. Ensure it's connector is nice and tight and free of corrosion.
If the plugs are fine, I'd get a can of the spray Seafoam, made to be slipped into the air hose before the throttle body and use that on the engine as per the directions. I used that on mine which was sitting predominately before I got my hands on it, and it made a good difference. A good fuel system cleaner (seafoam is my choice) isn't a bad idea, ran through on the last quarter for added concentration.
I'd also get a hold of a fuel pressure tester and see what you get. It ought to hold pressure for months at a time, so any visible dropping in the needle is a bad sign. Probably not a bad idea to replace your fuel filter, too. They're cheap.
You'll want to look at things that can effect ALL the cylinders. The main fuel line and fuel rail all the way back to the pump, as well as the air filter to the throttle body.
On a cold engine, I'd pull out all the plugs and see what you have. If they're worn, replace 'em, if not, then cool. The color of the plug will tell you a lot about how it's running. Real sooty means rich, and if they're real clean that's lean. A mid-dark brown is about the color the porciline should be. The coil pack could also be crapping out. Ensure it's connector is nice and tight and free of corrosion.
If the plugs are fine, I'd get a can of the spray Seafoam, made to be slipped into the air hose before the throttle body and use that on the engine as per the directions. I used that on mine which was sitting predominately before I got my hands on it, and it made a good difference. A good fuel system cleaner (seafoam is my choice) isn't a bad idea, ran through on the last quarter for added concentration.
I'd also get a hold of a fuel pressure tester and see what you get. It ought to hold pressure for months at a time, so any visible dropping in the needle is a bad sign. Probably not a bad idea to replace your fuel filter, too. They're cheap.
#5
04-04-2017
Thread Starter
|
Member
Joined: Mar 2017
Posts: 4
Likes: 0
From: Lake city,Florida
I can't speak on p104, but p0300 is a different story.
You'll want to look at things that can effect ALL the cylinders. The main fuel line and fuel rail all the way back to the pump, as well as the air filter to the throttle body.
On a cold engine, I'd pull out all the plugs and see what you have. If they're worn, replace 'em, if not, then cool. The color of the plug will tell you a lot about how it's running. Real sooty means rich, and if they're real clean that's lean. A mid-dark brown is about the color the porciline should be. The coil pack could also be crapping out. Ensure it's connector is nice and tight and free of corrosion.
If the plugs are fine, I'd get a can of the spray Seafoam, made to be slipped into the air hose before the throttle body and use that on the engine as per the directions. I used that on mine which was sitting predominately before I got my hands on it, and it made a good difference. A good fuel system cleaner (seafoam is my choice) isn't a bad idea, ran through on the last quarter for added concentration.
I'd also get a hold of a fuel pressure tester and see what you get. It ought to hold pressure for months at a time, so any visible dropping in the needle is a bad sign. Probably not a bad idea to replace your fuel filter, too. They're cheap.
You'll want to look at things that can effect ALL the cylinders. The main fuel line and fuel rail all the way back to the pump, as well as the air filter to the throttle body.
On a cold engine, I'd pull out all the plugs and see what you have. If they're worn, replace 'em, if not, then cool. The color of the plug will tell you a lot about how it's running. Real sooty means rich, and if they're real clean that's lean. A mid-dark brown is about the color the porciline should be. The coil pack could also be crapping out. Ensure it's connector is nice and tight and free of corrosion.
If the plugs are fine, I'd get a can of the spray Seafoam, made to be slipped into the air hose before the throttle body and use that on the engine as per the directions. I used that on mine which was sitting predominately before I got my hands on it, and it made a good difference. A good fuel system cleaner (seafoam is my choice) isn't a bad idea, ran through on the last quarter for added concentration.
I'd also get a hold of a fuel pressure tester and see what you get. It ought to hold pressure for months at a time, so any visible dropping in the needle is a bad sign. Probably not a bad idea to replace your fuel filter, too. They're cheap.
Thread
Thread Starter
Forum
Replies
Last Post
TippnOver
General Technical & Electrical
39
08-29-2005 05:35 PM
Trevelyn1015
Ranger-Forums Office
21
07-29-2004 09:02 AM
