1984 c4 hot starting problem

I have a 1984 c4 in pretty good shape and is very clean. When it is
hot and parked for a while it is like it is flooded and it don't start
too well. It has been tuned up recently and a new EGR valve and EGR
solinoid installed. When it is running it runs perfect and smooth, it
just don't start good hot.

Any ideas?


Thanks,

Steve

On Wed, 13 Aug 2008 23:37:33 -0400, wrote:

>I have a 1984 c4 in pretty good shape and is very clean. When it is
>hot and parked for a while it is like it is flooded and it don't start
>too well. It has been tuned up recently and a new EGR valve and EGR
>solinoid installed. When it is running it runs perfect and smooth, it
>just don't start good hot.
>
>Any ideas?
>
>
>Thanks,
>
>Steve

Sounds Like Vapor Lock. Check Fuel Pump Pressure. My 84 had a
collapsed fuel pump sock(fuel filter) that restricted the fuel to the
pump. It is attached to the submersible fuel pump in the tank.

wrote:
> I have a 1984 c4 in pretty good shape and is very clean. When it is
> hot and parked for a while it is like it is flooded and it don't start
> too well. It has been tuned up recently and a new EGR valve and EGR
> solinoid installed. When it is running it runs perfect and smooth, it
> just don't start good hot.
>
> Any ideas?
>
>
> Thanks,
>
> Steve
I had a similar problem on my '85. It would start up right away if it
had sat long enough, or was recently shut down, but if it sat for an
hour of more, it wouldn't start.

It turned out to be carbon build up in the combustion chambers. When it
was running and hot, the carbon absorbed fuel. When it sat and cooled,
the fuel was released into the engine, and flooded it. If it sat long
enough, the fuel evaporated, and the car would start OK.

--
Jim

"JimH" > wrote in message
...
> wrote:
>> I have a 1984 c4 in pretty good shape and is very clean. When it is
>> hot and parked for a while it is like it is flooded and it don't
>> start
>> too well. It has been tuned up recently and a new EGR valve and EGR
>> solinoid installed. When it is running it runs perfect and smooth,
>> it
>> just don't start good hot. Any ideas?
>>
>>
>> Thanks,
>>
>> Steve
> I had a similar problem on my '85. It would start up right away if
> it had sat long enough, or was recently shut down, but if it sat for
> an hour of more, it wouldn't start.
>
> It turned out to be carbon build up in the combustion chambers. When
> it was running and hot, the carbon absorbed fuel. When it sat and
> cooled, the fuel was released into the engine, and flooded it. If it
> sat long enough, the fuel evaporated, and the car would start OK.
>
> --
> Jim

Interesting, was it removed and corrected the problem?

> wrote in message
...
>I have a 1984 c4 in pretty good shape and is very clean.
>When it is
> hot and parked for a while it is like it is flooded and it
> don't start
> too well. It has been tuned up recently and a new EGR
> valve and EGR
> solinoid installed. When it is running it runs perfect and
> smooth, it
> just don't start good hot.
>
> Any ideas?
>
>
> Thanks,
>
> Steve

try running some good fuel additive like
"Lucas Upper Cylinder Lubricant and Fuel Injector Cleaner"
through it and see what happens.
http://www.lucasoil.com/products/dis...tid=2&loc=show
or
http://tinyurl.com/ljvzj

it will also clean you tank, fuel pump and fuel lines.
you might need to change your fuel filter after ya get it
cleaned out.


my2¢
--
'Key
=====

Dad wrote:
>
> "JimH" > wrote in message
> ...
>> wrote:
>>> I have a 1984 c4 in pretty good shape and is very clean. When it is
>>> hot and parked for a while it is like it is flooded and it don't start
>>> too well. It has been tuned up recently and a new EGR valve and EGR
>>> solinoid installed. When it is running it runs perfect and smooth, it
>>> just don't start good hot. Any ideas?
>>>
>>>
>>> Thanks,
>>>
>>> Steve
>> I had a similar problem on my '85. It would start up right away if it
>> had sat long enough, or was recently shut down, but if it sat for an
>> hour of more, it wouldn't start.
>>
>> It turned out to be carbon build up in the combustion chambers. When
>> it was running and hot, the carbon absorbed fuel. When it sat and
>> cooled, the fuel was released into the engine, and flooded it. If it
>> sat long enough, the fuel evaporated, and the car would start OK.
>>
>> --
>> Jim
>
> Interesting, was it removed and corrected the problem?
>
Yes. It was the Chevy dealer that did it. They used a solvent to remove
the carbon, and suggested that I drive the car for a long drive to clean
it out. I drove From Tucson, to Wilcox and back, and bought a really
good apple pie in Wilcox. :-)

They said if that didn't work, they were going to use crushed walnut
shells or something like that. It has been more than a few years, so I
don't remember the details exactly. I kept the car for several years
after that, and never had any more problems with starting it.

--
Jim

On Wed, 13 Aug 2008 23:37:33 -0400, wrote:

>I have a 1984 c4 in pretty good shape and is very clean. When it is
>hot and parked for a while it is like it is flooded and it don't start
>too well. It has been tuned up recently and a new EGR valve and EGR
>solinoid installed. When it is running it runs perfect and smooth, it
>just don't start good hot.
>
>Any ideas?
>
>
>Thanks,
>
>Steve
Thanks for all the good info. I will dig into it and see!


Steve

>
>>I have a 1984 c4 in pretty good shape and is very clean. When it is
>>hot and parked for a while it is like it is flooded and it don't start
>>too well. It has been tuned up recently and a new EGR valve and EGR
>>solinoid installed. When it is running it runs perfect and smooth, it
>>just don't start good hot.
>>
>>Any ideas?
>>
>>
>>Thanks,
>>
>>Steve
>

Excuse my ignorance of the 84. Does it have a QudraJet carb? If it does,
sounds like the secondary metering well plugs are leaking. If not kindly
hold your rusty starters and just delete this. I have CRS and don't remember
when they introduced the cross fire injector.

Al

Big Al wrote:
>>> I have a 1984 c4 in pretty good shape and is very clean. When it is
>>> hot and parked for a while it is like it is flooded and it don't start
>>> too well. It has been tuned up recently and a new EGR valve and EGR
>>> solinoid installed. When it is running it runs perfect and smooth, it
>>> just don't start good hot.
>>>
>>> Any ideas?
>>>
>>>
>>> Thanks,
>>>
>>> Steve
>
> Excuse my ignorance of the 84. Does it have a QudraJet carb? If it does,
> sounds like the secondary metering well plugs are leaking. If not kindly
> hold your rusty starters and just delete this. I have CRS and don't remember
> when they introduced the cross fire injector.
>
> Al
>
>
Crossfire
--
pj

"Big Al" > wrote in message
...
>
>>
>>>I have a 1984 c4 in pretty good shape and is very clean.
>>>When it is
>>>hot and parked for a while it is like it is flooded and
>>>it don't start
>>>too well. It has been tuned up recently and a new EGR
>>>valve and EGR
>>>solinoid installed. When it is running it runs perfect
>>>and smooth, it
>>>just don't start good hot.
>>>
>>>Any ideas?
>>>
>>>
>>>Thanks,
>>>
>>>Steve
>>
>
> Excuse my ignorance of the 84. Does it have a QudraJet
> carb? If it does, sounds like the secondary metering well
> plugs are leaking. If not kindly hold your rusty starters
> and just delete this. I have CRS and don't remember when
> they introduced the cross fire injector.
>
> Al

1984 c4 = cross fire injector

however, mine doesn't..
my2¢
--
'Key
=====