Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
good morning my name is ***** ***** I will assist
what was the exact fuel pressure???
do you have 2 injectors on top the throttle body or the spider unit???
that is fine
yes, it sounds like you either have a failed spider or a fuel pump. the pressure should hold better.
ok, that is good. have you cleaned the throttle body for the idling issue???
do you have a scan tool to monitor the long term trims???
leaking fuel pressure regulators are a common failure for this as well.
follow the air filter inlet to the throttle body. it has a flapper plate that carbons up. a scan tooll is conneted to the aldl connector under the dash and reads computer information
thats a code 12 and that is normal with engine off.
not looking for codes, just looking for the trims to determine if it is running rich or lean.
you need a scan tool that can read data from the ecm
yes, from the info you gave me, yes, it is good
please dont forget to rate me as it is the only way I get paid for my efforts
you can rate at any time
yes, when the pedal is depressed, it will open.
use 2plus 2 carb cleaner
if the tps is out of range it will code.
weekends are better. I am on and off during the week
the fuel pump will only run for 2 seconds with key on engine off. it will start running again when the engine cranks to start.can you check the actual fuel pressure??
ok, do you have spark at the plugs cranking??? lets back track and check the basics again.
ok, can you do a compression test??? you can rent a tester at a parts store.
what was the compression???
90 is low. if you have spark, fuel and air, and have low compression, I suspect a worn timing chain.
remove the front cover and inspect. the water pump has to come off to access the timing chain cover
with your issue of compression, it will definitely show wear
it stretches and retards the timing which effects the compression