I had the same problem (with the coolant) on my '75 Spit.
Changing the radiator cap fixed mine immediately! Apparently there is
some mechanism in the cap that allows the
fluid to be sucked back into the radiator when cool.
Good luck!
Glenn Bowley
Mansfield, CT
'75 Spit (FM30644U)
> -----Original Message-----
> From: Bollinger, Bob D. (BODB) [SMTP:BODB@chevron.com]
> Sent: Monday, August 31, 1998 11:47 AM
> To: 'spitfires@autox.team.net'
> Subject: Rough Running and Coolant
>
> I have two things on my '79 Spit that I'd like to get the lists
> thought's on.
>
> 1) the engine runs really rough for the first ten minutes before it
> warms up then it runs good. By rough I mean that it's fine at idle,
> but
> when accelerating it seems to sputter at the higher rpms and not have
> a
> lot of power. Accelerating up a hill it really feels awful. The only
> thing I can equate it to is when I start my weedeater and it's on half
> choke which makes me think this is a choke issue. Any thoughts?
>
> 2) after getting back from a longer drive my coolant system will
> consistently expel about a cup of coolant into the excess coolant
> reservoir as it's supposed to. When the engine cools down it does not
> suck this coolant back into the system as the manual says it's
> supposed
> to so I end up pouring some of the coolant in the reservoir back into
> the system. When I look at the radiator cap I don't see how it would
> allow fluid back into the system as it cools down. It just looks like
> as the pressure decreases in the system that it would seat the
> radiator
> cap seal even more. Could this be a wrong radiator cap?
>
> Thanks in advance for your advice.
>
> Bob Bollinger
> '79 Spitfire
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