Flooding GM 4Tech that isn't flooded?

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rdoc - 03 Jan 2008 10:06 GMT

Hello again,

88 Pontiac 6000 151 2.5L FI

Is there a particular sensor on these that makes the car sometimes think
it's flooded at startup? IE even though it has not cranked for many hours,
it needs the peddle held to the floor during starting? I have pulled plugs
and they are not soaked when this happens and it does not happen all the
time (although it happens with increasing frequency).

Thanks for any input

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boxing@sasktel.net - 05 Jan 2008 07:36 GMT

black smoke out of the tail pipe would tell you its flooded. Did you
check out all the simple things like a clogged air filter?

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rdoc - 07 Jan 2008 01:37 GMT

> black smoke out of the tail pipe would tell you its flooded. Did you
> check out all the simple things like a clogged air filter?

Oh... it's definitely not flooded. When this occurs it occurs from the very
first crank when the engine is cold. I thought it might be a engine cooling
sensor not letting it know that it's cold or something, so I changed that
since it is only like $9.00. There is no smoke and the plugs are not wet
when it's happening. It does have some blowby from tired rings that gets the
air filter pretty clogged rather quickly, but it is changed often. The plugs
are not fouled.

I've been considering a motor swap on this due to the rings but if the
sensors change over (some will have to as I understand the recycler) then I
may have the same issues still.

It generally starts fine when warm. I don't think codes are going to show
during startup, and I don't know if my little cheapo scanner is even
relevant to this engine.

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