The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 06-20-2012, 09:56 AM   #1
bigblue87
Registered User
 
Join Date: Apr 2012
Location: Michigan
Posts: 18
Engine help PLEASE!

I'm not going to lie this truck has me going nuts. So im going to give you guys the low down and hopefully i can get this problem solved

87 Chevy v10 with a 5.7 engine TBI
it is idling very rough and seems to be missing and running rich...seems to smooth out over 2000 rpm

thats how it runs now and how it ran before i did all this stuff:

Did a compression test and found no compression in the 8th cylinder so i tore the top half of the motor down to find it had a sucked valve and the cam and lifters were toast. Had the heads gone through at a shop and got a new set of lifters and a computer friendly cam. At this point i expected it to fire up and run like a champ....but no luck. the only thing that actually helped was the hard shift i was getting from 1st to 2nd.

ive replaced most every sensor in the thing.
distrib looks fine... replaced the coil
plugs & wires
took a look at the tbi spray and it seemed decent except it seemed to be spraying alot more fuel than it needed (actually seemed to smooth out when blocking one injector with my finger)



Hopefully some one has some ideas cause im about ready to give up on this damn thing hahaha
bigblue87 is offline   Reply With Quote
Old 06-20-2012, 10:15 AM   #2
splehigh
Registered User
 
splehigh's Avatar
 
Join Date: Nov 2008
Location: Glenville, Pa
Posts: 445
Re: Engine help PLEASE!

Maybe check the fuel pressure and change the fuel filter?
splehigh is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 05:46 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com