Question about Chevrolet Silverado 1500 14920-88 Tonneau Cover Tuff Tonno

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1988 chevrolet silverado 1500 losing power

My truck losing power and back firing

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Sounds as though the in-line fuel filter is stopped up. It is typically located underneath the truck on the frame rail. It has a inline fitting on each end.
If stopped up it can still run, though not very well. When driving the truck, try pressing the throttle full throttle and see if it starts to slow, or loses more power. Easier to determine if on a steep hill and then accelerate. It can also be checked with a fuel pressure gauge hooked to the shrader valve on or near the intake manifold.
Another note: A clogged catalytic converter can do somewhat the same symptom.
This is not typically the way most will do it, but without a diagnostic can be a way of getting a general idea.

Posted on Jan 05, 2015

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Before buying any parts you should do the following: inspect plugs, wires, cap, rotor, wire connections to distributor, alternator,starter, battery, belts. Make sure each part is tight and secure. Replace parts that need to be replaced an checking performance after. Next if everything looks ok, take plug out of cylinder#1, set piston to top dead center on compression stroke. Remove cap on distributor, rotor should be pointing to #1 cylinder, if not depending where rotor is pointing you could have the following problems. 1. Distibrutor loose. 2. Bent distributor shaft.3. timing chain skipped a cog 4. Inside distributor is corroded or parts have stuck or come loose. You could have set #1 cylinder in the wrong position. A compression test should be done first before replacing changing timing chain # should be close if out by a lot and the motor has high mileage year of vehicle and condition body wise should be considered , as this could end up being a money pit.

Posted on Jan 05, 2015

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Check fuel supply

Posted on Sep 01, 2014

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