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hawkeyes2 · Guest

I would appreciate some ideas of what my truck's problem might be. It runs
great when starting up and runs fine for the first mile, but then it starts
to bog down and miss. If you pump the gas pedal/goose it a little bit it
jumps like it wants to run, but it doesn't sustain it. It's an 83 Chevy
Full size with a 305 engine and a quadrajet carb. I've checked spark
plugs and wires, distrib cap and rotor, vacuum advance, checked all vacuum
lines, Checked ignition timing, sprayed carb cleaner down in carb while
running, ran b12 through the gas tank with good gas, new fuel filter.
Everything I've looked at seems to be okay. Any idea what I could try
next?

Lawrence Glickman · Guest

On Thu, 20 Jan 2005 22:38:48 -0500, "hawkeyes2"
<1234@nospam.earthling.net> wrote:

hawkeyes2 · Guest

I think I will try the propane test. Seems like it would be more accurate
than a funnel on the end of an old garden hose stuck up to my ear. I'll
post the results.

Lawrence Glickman · Guest

On Fri, 21 Jan 2005 00:34:44 -0500, "hawkeyes2"
<1234@nospam.earthling.net> wrote:

Anthony · Guest

"hawkeyes2" <1234@nospam.earthling.net> wrote in
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Sportster4Eva · Guest

hawkeyes2 wrote:

hawkeyes2 · Guest

Well here's an update. I tried the propane test around the intake, vacuum
lines, and anywhere air could be sucked in and I didn't find a leak
anywhere. I also checked the egr valve and it's OK too. Someone
mentioned the carb might be stopped up and I guess that's possible since I
have a bad ladybug problem. The only other 2 things I can think of is the
carb or the coil. You think the coil might be getting weak? How exactly
do you check a coil? This uses the kind that fits in the top of the
distrib cap.

ed · Guest

Lots of fuel pump troubles these days.
Check your fuel pressure.

Andrew Crabtree · Guest

"hawkeyes2" <1234@nospam.earthling.net> wrote in message
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Billy Bad Assr© · Guest

"hawkeyes2" <1234@nospam.earthling.net> wrote in message
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Billy Bad Assr© · Guest

Engine Off!!!!!

hawkeyes2 · Guest

Well I've worked at this truck all day today and still haven't figured it
out. So far the head gasket isn't leaking and it isn't sucking air from
anywhere else that I know of. As far as I can tell everything with the
egr system is working. I pumped the carb while looking down the throat an
I get 2 strong solid streams of gas. A new fuel filter doesn't help. I
would check the fuel pressure, but I don't have anything to check it with,
although I do know the pump is pumping lots of volume. The engine is
burning a crap load of gas and as far as I can tell the choke isn't
sticking. I just don't understand how this thing can idle so well and run
so good for the first half mile or so and then screw up so bad. It seems
like it smothers out more if I put the engine in a bind trying to go
uphill. However, if I floor it and get the other half of the carb open,
it will run like crap until I let off and close it. That's what makes me
think the carb is stopped up, but why so much gas consumption?

MasterBlaster · Guest

"hawkeyes2" wrote

hawkeyes2 · Guest

Everything is leading me to believe the carb is the problem. I've wanted
to have the carb rebuilt for a while now, but it hasn't given any problems
until now, so if I can find good mail order rebuild service I may go with
that. I talked to my mechanic and he said it would be over a week before
he could get my truck in his shop, so that's why I decided to try a few
minor things myself. As soon as it's fixed I'll post again. Thanks very
much to all of you who have made suggestions. It was a big help.

Ted Mittelstaedt · Guest

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