Bad injectors?
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Senior User
Joined: Jan 2011
Posts: 107
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Bad injectors?
I have an 1988 f-250 with a fuel injected 460. I have changed the spark plugs. They were fouled out. I cleaned them first and put them back in. They fouled out again so I put new ones in. They fouled out too. When I cleaned the first ones the truck quit smoking. When I put new ones it also quit smoking. The smoke is fuel. My guess is fuel injectors. I also replaced the fuel regulator. No change. Have replaced the pump and lines. Can anyone help?
Elder User
Joined: Mar 2011
Posts: 923
Likes: 1
From: North Central MA
Can you describe the plug fouling? Snap a quick pic of the plugs ? When I replace BAD* plugs ( this may be a lil retentive) but I grab a piece of card board and poke 8 holes. Then pull them putting them in the hole it came out of the motor from. When your done you have a good picture of how the old mill is churning inside. Keeps things in order so you know whats going on and where in the block. Smoke + 8 bad plugs does not add up to 1 injector. I'd be looking in another direction.
Elder User
Joined: Mar 2011
Posts: 923
Likes: 1
From: North Central MA
K your on the right path..
Have you tried to pull codes? Off the top of my head I'ds toss a temp sensor at it. This being the O2 is good.
This site will give you test values click the sensor link on the right of the page.
http://fordfuelinjection.com
Ill check back next weekend. GL bud
Justin
Have you tried to pull codes? Off the top of my head I'ds toss a temp sensor at it. This being the O2 is good.
This site will give you test values click the sensor link on the right of the page.
http://fordfuelinjection.com
Ill check back next weekend. GL bud
Justin
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Senior User
Joined: Jan 2011
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Can't drive it yet. how can I check the codes with out a scanner. The last time it only said the distributor.
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FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
Go here.... Ford Fuel Injection » How To Run a Self-Test and follow the directions, post up the codes that you get. Also check fuel pressure because if you have a problem with the selector valve or have a blocked return line pressure will be too high and the regulator won't correct for it.
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Fleet Mechanic
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From: Conway, South Carolina
Does it have fresh gas?
The injectors in my 89 f150 does not like old gas (they hang up)
RJM does sell a injector service kit ( 8 injectors) for $20.RJM Injection Tech — Fuel Injector Service Kit
The injectors in my 89 f150 does not like old gas (they hang up)
RJM does sell a injector service kit ( 8 injectors) for $20.RJM Injection Tech — Fuel Injector Service Kit