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Re: BJ8 missing at high revs

To: "Christoph Schumann" <christoph.schumann@harmsen.utescher.com>
Subject: Re: BJ8 missing at high revs
From: "Alan Seigrist Blue 100" <healey.nut@gmail.com>
Date: Tue, 5 Sep 2006 17:37:49 +0800
Christoph

If it is missing at high revs, it will likely be:

1) bad condensor
2) timing is off
3) dwell is too big or too small (i.e. contact gap is off)
4) coil is going bad
5) mechanical advance weights are stuck

Put a timing gun on the motor and see if the ignition is advancing per the
workshop manual.  You should be ~ 30ish to 40ish  deg BTDC by 3-4K rpm.  If
it is less than that then your weights are stuck.  If timing is ok... then
it's bullet pts 1,3 or 4 above.

Alan



On 9/5/06, Christoph Schumann <christoph.schumann@harmsen.utescher.com>
wrote:
>
> Hi folks,
>
> after several years, I am back on the list having recently purchased a
> fully restored Mk III Phase 1. The work carried out on the car shows
> great attention to detail. However, one problem needs to be sorted: When
> accelerating hard and revving high, the engine seems to be missing.
> Ignition, timing, plugs, valves, compression have been checked, the
> carbs (HD8) needed some work (new needles, new damper springs, new jet
> bearing kits).
>
> Any suggestions are welcome!
>
> Best, Chris
> Hamburg, Germany
>
> '65 BJ8 Ph. 1
> '70 280 SE 3.5 Coupe
> '95 911




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