Cold Start Valve for 88 corvette
Thread Starter
Melting Slicks
Joined: Jun 2000
Posts: 2,923
Likes: 1
From: Las Vegas NV
Cold Start Valve for 88 corvette
I replaced the injectors last year due to hard start when hot problem. Couldn't get a new cold start valve at the time, carparts.com kept sending me the tube instead of the valve itself.
since then no more problem with hot start, but the car took longer to start in the morning and I can see some fuel leaks at the valve. I have new O rings for the valve to replace, when I replace the intake mainfold gasket latter this month. How do I know that the valve still good and only need to replace the O ring? Should I replace the cold start valve this time.
Where can I get the cold start valve?
Do you have the part no. for it?
Thanks,
since then no more problem with hot start, but the car took longer to start in the morning and I can see some fuel leaks at the valve. I have new O rings for the valve to replace, when I replace the intake mainfold gasket latter this month. How do I know that the valve still good and only need to replace the O ring? Should I replace the cold start valve this time.
Where can I get the cold start valve?
Do you have the part no. for it?
Thanks,
Drifting
Joined: Mar 1999
Posts: 1,931
Likes: 1
From: Norcross GA
Re: Cold Start Valve for 88 corvette (VQT88Vette)
Is it clogged? Does it leak?
W/ the electrical connector off, pressurize the fuel rail. Does fuel come out of the injector? (A dribble is no big deal.) The injector should stay dry.
W/ the engine cold and the injector out of the manifold, turn the key to the ON position. Fuel should spray.
I'm told the injector is no longer available.
When bolting it back in, make sure it is properly seated, or the tab will bend, leaving a vacuum leak.
W/ the electrical connector off, pressurize the fuel rail. Does fuel come out of the injector? (A dribble is no big deal.) The injector should stay dry.
W/ the engine cold and the injector out of the manifold, turn the key to the ON position. Fuel should spray.
I'm told the injector is no longer available.
When bolting it back in, make sure it is properly seated, or the tab will bend, leaving a vacuum leak.
Pro
Joined: Jun 2000
Posts: 686
Likes: 0
From: Crystal Lake, IL USA
Re: Cold Start Valve for 88 corvette (VQT88Vette)
Also possible that the relay/sensor (front of block behind diverter valve on an '86) is malfunctioning. Or maybe a wiring/fuse problem. Probe the connector - the valve should be powered up only while cranking when coolant temp is < ~100F.
Maybe one of the places that rebuilds & flow tests injectors could R&R the cold start valve, otherwise, to a junkyard you must go.
Final possibility - upgrade your PROM code to $6E and forget about the 9th injector.
Maybe one of the places that rebuilds & flow tests injectors could R&R the cold start valve, otherwise, to a junkyard you must go.
Final possibility - upgrade your PROM code to $6E and forget about the 9th injector.
