Running rich

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Marque
Posts: 2
Joined: Wed Mar 22, 2006 8:00 am

Running rich

Post by Marque » Wed Mar 22, 2006 8:08 am

When I am driving the engine will run just fine. Without warning black smoke starts coming from the exhaust and the engine is running unbelievably rich. The car slows down and seems to miss also. I have had the car in the shop reapetedly and no one seems able to solve the problem.
THX
Mark

mccutcheon4
Posts: 153
Joined: Thu Mar 16, 2006 8:27 am
Location: PNW

Post by mccutcheon4 » Wed Mar 22, 2006 9:58 am

Is it carbureted or fuel injected ?

Marque
Posts: 2
Joined: Wed Mar 22, 2006 8:00 am

Post by Marque » Sun Mar 26, 2006 12:49 pm

Thanks for the reply.

Fuel injected.

THX
Mark

DBrown
Posts: 1545
Joined: Mon Apr 19, 2004 5:21 am
Location: Bowling Green, KY

Post by DBrown » Sun Mar 26, 2006 4:14 pm

do you have a check engine light on?
71 Bronco - twin sticked, full width, 2" lift, wristed arm, lots of rust...

http://www.catalystcycles.com

ranger5.0
Posts: 743
Joined: Sat Jan 01, 2005 8:10 pm
Location: Granite Falls, Wa
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Post by ranger5.0 » Sun Mar 26, 2006 9:02 pm

Sounds like the EGR vavle may have gone caputes. Or some other kind of major vacuum leak.
EBSteve just likes to watch me break things.:-)
420HP and 775Ft lbs Now it is time to break things.

Ender
Posts: 4
Joined: Fri Nov 11, 2005 10:48 am
Location: Carson City, NV

Post by Ender » Mon Mar 27, 2006 4:18 pm

I had the same sort of symptoms and it turned out that the fuel pressure regulator was the problem.
'86 Bronco II
2.9 V6, Custom Front Bumper
2.5" Lift, 30" Tires
Rear Lock-Right

DBrown
Posts: 1545
Joined: Mon Apr 19, 2004 5:21 am
Location: Bowling Green, KY

Post by DBrown » Tue Mar 28, 2006 5:52 am

honestly there is no way for use to say what it is unless we get more info. if the check engine light is on it will narrow it down to certain sensors. also if the check engine light is on you can run to the parts house and have the codes read for free and find out what the problem is. if there is no check engine light trouble shooting is a little more difficult. to try to throw things out as suggestions with the info we have would be a shot in the dark at best.
71 Bronco - twin sticked, full width, 2" lift, wristed arm, lots of rust...

http://www.catalystcycles.com

B2JAY
Posts: 69
Joined: Wed Feb 16, 2005 3:59 pm

Post by B2JAY » Wed Mar 29, 2006 1:18 pm

I would say fuel pressure regulator...

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