I think the more common causes of dieseling are built-up carbon on the
combustion chamber piston, incorrect timing, an engine running too hot or
lean. Prior to rebuilding my BT7 engine it would diesel occasionally. There
was quite a bit of carbon on the piston tops. After the rebuild it did not.
John Spaur
'62 BT7
-----Original Message-----
From: Healeys <healeys-bounces@autox.team.net> On Behalf Of Ken Freese via
Healeys
Sent: Friday, July 5, 2024 11:55 AM
To: AustinHealeylist <healeys@autox.team.net>
Subject: [Healeys] SU slow run valve or open throttle
Which technique will minimize dieseling on my BJ8, using the slow run valve
for a low idle or closing the slow run valve and using the throttle screw
for a low idle? Joe Curto hasn't responded yet.
I know an aluminium head would fix the whole high compression problem, but I
am not there yet.
Thanks,
Ken Freese
65 BJ8
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