hard start after walbro....
hard start after walbro.... ok goana try and make this quick...had trouble keeping over 30 psi fuel pressure in my car..95 z...changed filter, regulator, made sure no leaky injectors, then sprung for a new racetronix kit...got it installed it and right away 55 psi at prime and 48 or so when it started...car drives like a champ ect much more power......but now it hard starts bad...i hooked up a gauge and you can prime the pump and it shoots for 55 psi, once the pumps done priming it drops to 5 psi within 3 seconds...its not a leaking fuel line and its not a leaky injector i checked....so it has to be leaking on the feed line inside the tank right?
i posted on another site and was told by some1 that
""There's a check valve in the pump that holds the fuel pressure in the supply line. May have failed already. Or you may have a loose hose at the pump.""
im going to check tomaro about the hose but i think if the hose was loose it would have blown off the line already....
i bought this brand new unopened from another member off here...he got it from thunder...who can i call?
i posted on another site and was told by some1 that
""There's a check valve in the pump that holds the fuel pressure in the supply line. May have failed already. Or you may have a loose hose at the pump.""
im going to check tomaro about the hose but i think if the hose was loose it would have blown off the line already....
i bought this brand new unopened from another member off here...he got it from thunder...who can i call?
Launching!
Joined: Feb 2007
Posts: 297
Likes: 0
From: Tucson
This happens alot. dont get pissed but there is probally a hose clamp loose. You will probally say " no way everything is tight and looks good". But I am telling you alot of folks have some issues with the walbro and 9 out 10 times its a losse wire or hose clamp.
My car has a walbro with out the check valve. starts fine. no differnt than factory.
My car has a walbro with out the check valve. starts fine. no differnt than factory.
Launching!
Joined: Feb 2007
Posts: 297
Likes: 0
From: Tucson
hmmmmmm. I know.
When your car sits over night will it fire right up? but if drove to a store and did some shopping, came out and it cranks for a long time to start. It this is happening it is your fuel pressure regulator. they are less than $100.
When your car sits over night will it fire right up? but if drove to a store and did some shopping, came out and it cranks for a long time to start. It this is happening it is your fuel pressure regulator. they are less than $100.
it hard starts all the time...you have to prime it to get pressure first...15 seconds or a day...
ive got 3 differant stock regulators i can try another but i know this ones good i just pulled it off another car....
ive got 3 differant stock regulators i can try another but i know this ones good i just pulled it off another car....
anyone else got an idea on this hard start? is the check valve bad or is there supposed to be a clamp on the pressure line? i got the new version and it clips to the feed line....
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Joined: Mar 2002
Posts: 2,032
Likes: 26
From: A Racetronix dealer near you...
In most cases this is because the fuel tube is not sealing properly. Usually this happens because:
- the gear clamp is over tightened
and/or
- the plastic ribbed outlet has been scored deeply when removing the factory fuel tube
It is possible for the regulator or a leaky injector to cause this problem as well. Your GM factory manual has a step by step diagnostic procedure to help isolate this type of problem.
- the gear clamp is over tightened
and/or
- the plastic ribbed outlet has been scored deeply when removing the factory fuel tube
It is possible for the regulator or a leaky injector to cause this problem as well. Your GM factory manual has a step by step diagnostic procedure to help isolate this type of problem.
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Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
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Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<
well can i put a hose clamp on the new style ribbed line? theres no scores in it i made sure to be careful because believe me i dont wanna be doing this again...i checked fro leaky injectors...but i have no clue how to check for a leaky regulator??
dont have a service manual....
dont have a service manual....