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73-87 Chevy _ GMC Trucks => Fuel Systems and Drivability => Topic started by: DanMC87 on March 05, 2011, 03:30:18 pm

Title: 1987 TBI problem
Post by: DanMC87 on March 05, 2011, 03:30:18 pm

Truck is 87 Chevrolet K10 TBI 350 and at about 1/4 throttle the engine starts to stumble.  At idle and past 1/4 throttle truck runs smooth.  Need help ASAP!

Title: Re: 1987 TBI problem
Post by: Da67goatman on March 05, 2011, 03:40:03 pm

Its most likely a vacuum leak.  Check around the tbi manifold gaskets for leaks.

Title: Re: 1987 TBI problem
Post by: topp on March 05, 2011, 06:22:26 pm

Check your EGR valve and Solenoid ....

Title: Re: 1987 TBI problem
Post by: VileZambonie on March 06, 2011, 06:38:03 am

Check the TPS and check for codes. Do a search on those key words if you don't know how to do it as it's been discussed many time here.