is my problem a too rich mixture?

[Bnjnz]

for a while now i have noticed and performance a little down. my exhaust had a rich smell to it, not a real heavy gas smell though. i recently did the TFI upgrade on my 1991 GW. when i pulled the plugs they had a lot of carbon deposits on them.

it ran good after the upgrade but then last week it was idling with a little shake. i pulled all the new plugs to check them out. most of them had large amounts of the carbon on them. i cleaned them off and it is runnning well. my egr needs to be changed and i will do that tomorrow, but i don't think this is my answer. i think i just need to lean out the carb. when i changed the ignition i did the timing and set the idle correctly.

am i misdiagnosing or do i have it? thanks for any help

benjamin
1991 GW

[JeepFreak]

A bad EGR valve can have lots to do with it. I have never seen one myself go bad but if it was bad and wasn't allowing air into the mix then yes it could cause a rich condition. Remember that the carb is calibrated to run with the EGR in working order.

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JeepFreak

[LostWolf]

Where is the hose coming off the egr supposed to hook up at. I am slowly replacing and reconnecting all the plugs lines from the PO. The vacume diagram is not always that clear.



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LostWolf
87GW "SuperWagon"
http://lostwolf.homestead.com/files/FSJ/sws.jpg
360AMC, 727, NP229(Replaced),
MotoCraft 2150 (Rebuilt), D44s,
Master Craft Courser Tires
No Modifications, Yet!
TybowKites@hotmail.com
www.geocities.com/yosemite/gorge/1372 (http://www.geocities.com/yosemite/gorge/1372)

[RudyC]

Check the powervalve in your carb it may be leaking. Holley PVs work fine in Motorcrap carbs just make sure you get one thats a two stage one or it will run too lean.
If that ain't it have you catolitic converter checked. It may be clogged.

[This message has been edited by RudyC (edited May 04, 2001).]

[Bnjnz]

i will give the powervalve a look. the cat is not clogged because i hacked mine off. now i straight pipe it to the muffler.

lostwolf i will look at the egr and where it hooks up when i get off work tomorrow. i am on my way there now. i ordered my new egr from the dealer today, i will not even print how much i paid. hopefully when change it out i will have a clearer picture of my too rich problem

benjamin
1991 GW

[desert_freak]

Those of you in need of new smog equipment or even EGR valves. I found a place on the web called Economy Smog Parts. I bought some of my missing parts from them that the Dealer doesn't even sell any more. They offered a factory original EGR for $55 but you can negotiate most of their prices down. I think I had him down to $37 with the purchase of several other parts, but I chose to go with a part store replacement with lifetime warranty for $22.

Their number is (800)232-7670

Good luck,

Patrick


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