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1986 GMC C3500 7.4L Mechanical
Posted to GM Engine on 7/25/2001 13 Replies

First heard this noise when engine was very warm and sounded like a lifter. I thought about the fuel pump but the pump rod is quiet. Started engine cold this AM and the noise is NOt lifters, but seems to be in the valve train. A very pronounced knock that can ...

13 Replies Received (View Replies)

  Related Documents & Media  1986 GMC C3500

 
Message Closed w/FIX

car Vehicle Data

1986 GMC C3500

VIN 14G1HC33W6
Engine7.4 L / 8 cyl / GAS
Trans4-speed Standard
DeliveryCARB
Message Closed w/FIX

car Vehicle Data

1986 GMC C3500

VIN 14G1HC33W6
Engine7.4 L / 8 cyl / GAS
Trans4-speed Standard
DeliveryCARB