[Healeys] Engine problem

[chucknsueo at aol.com]

Jack,

?

The "dieseling" you describe?is very common.?The cylinder interior is so hot it burns the gas without the spark plug firing just from the compression.? If it gets too bad it can actually break the crankshaft, so you are right to be concerned.?I can usually prevent it by stepping on the clutch and holding it when you turn off the key.? My BT7 does that all the time when I put regular gasoline (petrol to you of course!)?in it.? Putting in premium (higher octane rating) petrol usually takes care of the problem.? There are also adjustments you can?make but they may or may not solve the problem.? I believe you would retard the timing and/or enrich the mixture.? If the engine is running hot because the timing is too advanced or the carbs are too lean that can cause it.? Premium gas can handle these but regular gas can't, which is why the increase in octane works.? Aviation gas is a good?high octane boost in the US.? There are also commercial octane boosters to add to your gas tank.? Good luck!

?

Chuck Ott
Middletown, DE USA
62BT7, 67BJ8, 69AN9


-----Original Message-----
From: Ph.J.Aeckerlin <j.aeckerlin at tiscali.nl>
To: Healey forum <healeys at autox.team.net>
Sent: Mon, 20 Aug 2007 8:32 am
Subject: [Healeys] Engine problem




Friends,
Wednesday last I received my license plates and at last, after 6 and a 
half years, I am able to take my BJ8 out on the road. It's a fantastic 
experience but I have one point which worries me. When I switch the 
ignition off after a run of, say, half an hour, the engine continues to 
run for a few seconds. Very irregular, the engine shakes like hell until 
it dies out. I therefore now put my foot on the brake and release the 
clutch whilst in 1st gear - that does stop the engine but I don't like 
this kind of rough treatment.
The ignition is a 123 electronic ignition, the carbs were synchronized 
by a pro, the engine was overhauled by a pro - what can be the reason 
and what can I do to stop it?
Many thanks in advance for your reaction.
Regards,
Jack Aeckerlin, The Netherlands
1964 BJ8 29432
_______________________________________________
chucknsueo at aol.com 

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