Dave,
I'm certainly not an expert in these matters, but my wife once had a car
with the same symptoms....ran fine cold, but when warm, did not. What I
found was a cracked head. I guess water would seep into the cylinder
when warm. The water in the radiator looked like a thinned out
chocolate milk shake.
Bill
Atlanta
Listers,
I friend of mine who owns both a TR6 and Spitfire sent me this message
about the trouble he is having with his Spitfire. I thought I would
pass
it along to the collective wisdom of this list to see if anyone has
ideas.
I know there is a Spitfire list but I'm not a subscriber. TIA, Dave
ive got a great 79 spitfire Ive had since 1980. It only has 43,000
miles on it. Its always run great although I dont drive it much, but I
do
keep it running every few weeks to keep things oiled up. Ive never had a
dilema like my current one. Heres my problem I hope you can advise me.
The
car suddenly started running poorly. Missing when hot, particularly over
2500 rpm, even in neutral. So I started on the voyage to see what was
wrong,
thinking its probably something simple.
I started with the electrical. I switched the wires, new plugs, cap,
rotor.
Then I replaced the older Crane electronic ignition with a new one. I
swapped the coil with my TR6 and also the battery. I cleaned all the
grounds, checked all other wiring and cleaned. No luck, so I started on
the
fuel system. Bypassed the fuel filter, and even bypassed the tank itself
if
there was a clog or bad gas etc. No luck.
So I pulled the carb, cleaned it, put in new diaphragm and metering jet,
cleaned choke. It started up nice but once warm running poorly again. no
backfiring or anything like that. I replaced the fuel pump thinking
pressure
might be too low. No luck. It runs as though its starving for fuel. If I
rev
it up it recovers briefly, then starts to run rough again and will die
if I
let it idle. Still, whats weird is when I get it started from cold it
runs
well. Once warm is when it all starts going downhill.
Here's only thing I can think of thats left>> could it be the EGR valve
on
the manifold? that thing is original and Ive never done anything with
it.
Its pretty old looking and it plugs right into the intake manifold, so
it
the diphargm (does it have one?) was leaking maybe air is getting in.
The
only other thing I can think of is the carb itself. Maybe I should
replace
it?
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