HELP!!! Problem with a friends FORD
Thread Starter
Pro
Joined: Jul 2006
Posts: 597
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From: Texarkana Arkansas
HELP!!! Problem with a friends FORD
FORD, where do I start? He brings me this 1999 3.0 v-6 ranger of his with a check engine light and a misfire code(po302). I changed the plugs, plug wires, coil, and crankshaft sensor. The engine is still missing on #2. The trucks got 100,000 miles on it. Anybody ever had a po302 code, and fixed it with something other than what Ive already done? Any ideas?
Safety Car
Joined: Oct 2004
Posts: 3,725
Likes: 5
From: Minnesota
Try these guys:
http://www.batauto.com/cgi-bin/Forum/db_TalkToMeV2.cgi
You could also try googling the error code.
http://www.batauto.com/cgi-bin/Forum/db_TalkToMeV2.cgi
You could also try googling the error code.
Thread Starter
Pro
Joined: Jul 2006
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From: Texarkana Arkansas
Originally Posted by mrtroutjedi
it could be a bad fuel injector no gas = misfire
Racer
Joined: Feb 2005
Posts: 282
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From: chicago south burbs IL
Originally Posted by sam74c3
At the risk of sounding like a dummy.... how do you check injectors? I usually only deal in really old stuff.
i would unplug the injector and see if it runs the same if no change bad injector
Safety Car
Joined: Dec 2004
Posts: 4,876
Likes: 1
From: Jersey Shore Exit 98
Originally Posted by mrtroutjedi
i would unplug the injector and see if it runs the same if no change bad injector
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Race Director
Joined: Mar 2006
Posts: 14,112
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From: Florida
Originally Posted by sam74c3
At the risk of sounding like a dummy.... how do you check injectors? I usually only deal in really old stuff.
You cannot test if it sprays properly this way. You can rig up a pressurized apparatus to test, but for a 1 shot deal it probably is not worth it.
You can also use Chevron injector cleaner, the same as pros use, but they use it at very high concentrations to clean the system whilt running. Should be done regularily anyway for best performance
Thread Starter
Pro
Joined: Jul 2006
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From: Texarkana Arkansas
Originally Posted by jdmick
Try these guys:
http://www.batauto.com/cgi-bin/Forum/db_TalkToMeV2.cgi
You could also try googling the error code.
http://www.batauto.com/cgi-bin/Forum/db_TalkToMeV2.cgi
You could also try googling the error code.
Thread Starter
Pro
Joined: Jul 2006
Posts: 597
Likes: 0
From: Texarkana Arkansas
Originally Posted by red79c3
You have to have the software to clear the code once you've completed the work or it will keep on showing up, even if the problem has been fixed......
Thread Starter
Pro
Joined: Jul 2006
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From: Texarkana Arkansas
Originally Posted by Jims79
Before you replace an injector on an old truck w/a 100K try filling the tank w/good gas & adding a pint of a "good" brand fuel injector cleaner like Gunk-Out. I had the same problem w/my daughters VW Bug & the stuff ready works. I forget the name of the stuff but it was in a black bottle and made by one of the major gas company's.
Safety Car
Joined: Oct 2004
Posts: 3,725
Likes: 5
From: Minnesota
Originally Posted by sam74c3
Thanks for this website! I found something usefull, another guy with the same truck and problem. They tried everything I did, and it turns out that these 3.0 heads are bad about valve seat wear. They wear down so that the valve no longer seats, causing loss of compression and thus a misfire. My next test will be a compression test on #2.
