Question about 1997 Chevrolet C/K 3500
Its a 454 and I checked my compression, and all are 170 PSI or so. Any thoughts?
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Posted on Jan 02, 2017
Hi im really a ford man but all engine need 4 things to run
1. Spark (you checked that)
2. fuel (you checked that)
3. Compression (and you checked that)
4. Timing ( Check crank shaft sensor and timing belt )
how was it running before the no start condition
get back to me
give feed back if you can
hope this helps FixYa
Posted on Jan 29, 2011
SOURCE: my 1989 gmc 3500 truck
no compression means that a valve is stuck open / broken / or worn,, or piston rod is no longer connected ( broken ),,, or piston rings are totally worn out,, could also be a bad valve spring. start by removing the valve cover and inspect the valves on cylinder #1. if valves look intact then the next step is to remove the head,, at this point it should be very obvious what is wrong. could be a good time to re-build the motor at that point,, it is a great motor and it is worth re-building,,, it will give you years and years of service.
Posted on Feb 03, 2011
Bent valves would be number one cause. Check the timing. If you lost time, your valves are tapping the pistons causing the knock. When the valves tap the pistons they bend and don't close all the way, so the cylinders cant make compression.
Posted on Oct 17, 2012
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