Backfire and loses power
What could cause the 1989
Chevy Silverado to backfire
and loose power when
going up hills or when a load
is put on it. I have checked
the firing order and is ok
changed plugs and wires,
I'm stumped. Could it be the
I'd use a gage and check proper fuel pressure. If your tbi fuel injection, 9--13 psi. Also, check fuel injector spray pattern, just make sure both injectors are spraying fuel. If this is a carbed engine fuel pressure is usually a little less. Is it backfiring out the exhaust or intake, can you tell? I don't know liter size of engine? I can't rule out other issues.
put some carb cleaner down the throttle
check the distributor and rotor for any pitted terminals
Looking for a Used Silverado Classic 1500 in your area?
CarGurus has 26 nationwide Silverado Classic 1500 listings starting at $7,670.
Search Chevrolet Silverado Classic 1500 Questions
Chevrolet Silverado Classic 1500 Experts
Related Models For Sale