Re: leaky injectors??

["nacelp" <nacelp@bright.net>]

I wouldn't trust this test.
The fuel that has wetted the manifold, is givem time to evaporate, and that
is real easy to fire an engine with.   Just not finite enough for me.
Grumpy


> I've had an inconsistent starting problem for a while that I'm trying
> to track down... 87 TPI 5.0 sbc, v-8, SC, '730. For a long time I had
> assumed it to be caused by the ecm starting data not tuned well to
> this engine, but I did this test the other day....
>
> With the engine idling, I pulled out the injector fuses (two of them). Of
> course, the engine stop right away and I turned the key once or twice
> to make sure it was out of gas. After an hour, and with the injector
> fuses still removed, I turned the key again. This time the engine ran
> for 2-3 seconds before stopping. This engine has the older cold start
> injector, but I pulled that out and repeated the test... the cold
> start injector showed no signs of leaking and the engine still turned
> over several times after sitting for a while.
>
> So, sound like a leaky injector(s)? Has anyone else ever tried this
> experiment?  Is replacement the best fix?.....
>
> Unless someone has a better idea, I'll pull the full rail/injectors and
> pressurized the system looking for injector leaks. I had tested the
> injectors a year and a half ago when I assembled the engine. They
> looked fine then....
>
> john gwynne
>
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