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99,buick 3.8, erattic after poor start up
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yllek
New User
Jan 4, 2014, 8:49 PM
Post #1 of 9
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99,buick 3.8, erattic after poor start up
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99,buick regal,3.8 starts poorly,wont rev up,no codes. new wires/plugs,new intake gskts. cat is clear,125 lbs. all 6. what do i do next?  plugs look like over fueling, acts like a car with it's choke stuck. chugs coughs sputters.
(This post was edited by yllek on Jan 4, 2014, 9:13 PM)
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GC
User
Jan 4, 2014, 9:41 PM
Post #2 of 9
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Re: 99,buick 3.8, erattic after poor start up
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What is your fuel pressure? Do you have access to a scan tool that shows live data? Just started doing this out of nowhere? Or was anything done to vehicle just prior?
____________________________________________________
Willing to help, willing to learn... Rob
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kev2
Veteran
Jan 5, 2014, 10:30 AM
Post #3 of 9
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Re: 99,buick 3.8, erattic after poor start up
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you say no codes- do you have a scanner? Don't ASSUME no light no codes...
taking a swag- do a fuel pressure test AND observe pressure leak down wheen eng off....
EASY SIMPLE - see if there is evidence of FUEL in eng oil
PS how do you know cat is clear? not restricted..
(This post was edited by kev2 on Jan 5, 2014, 10:32 AM)
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Discretesignals
Ultimate Carjunky
/ Moderator
Jan 5, 2014, 11:47 AM
Post #4 of 9
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Re: 99,buick 3.8, erattic after poor start up
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Also wanted to add, did this problem start after or before you did the intake gaskets?
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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GC
User
Jan 5, 2014, 2:27 PM
Post #5 of 9
(1295 views)
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Re: 99,buick 3.8, erattic after poor start up
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Thats what I was thinking DS...
____________________________________________________
Willing to help, willing to learn... Rob
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Discretesignals
Ultimate Carjunky
/ Moderator
Jan 5, 2014, 5:36 PM
Post #6 of 9
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Re: 99,buick 3.8, erattic after poor start up
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Sorry G Just realized you already asked.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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GC
User
Jan 5, 2014, 6:31 PM
Post #7 of 9
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Re: 99,buick 3.8, erattic after poor start up
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DS - No, doesnt bother me, Id rather be seconded by someone with more experience. Just had flashbacks to the first one I did. Was the first manifold gasket Id ever done. Didnt clean out the holes in the head for the locating pins on gasket, and didnt clean LIM bolt holes in head good enough. Nothing seated well, ran poorly, wouldnt get over 1500 rpm, and oil level magically kept rising. Also have seen throttle body sprayed down with cleaner while apart and cruds up the MAF. But as you said, need to know when symptoms appeared.
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Willing to help, willing to learn... Rob
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mrmajestyk
User
Jan 6, 2014, 7:04 AM
Post #8 of 9
(1270 views)
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Re: 99,buick 3.8, erattic after poor start up
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I had a 92 Buick that did the same thing, turned out to be a bad fuel pressure regulator.
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