[Mgs] hesitation

[Councill, David]

I throw in another possibility based on the description as it sounds
similar to a problem I had last year with my 67BGT. The problem was
intermittent but usually happened after the engine was at operating
temperature and when trying to accelerate after maintaining a steady
speed (probably 2800-3200 rpm). Mine was more of a hesitation, somewhat
of a miss. Maybe the same problem, maybe something entirely different,
but we are relying on personal descriptions here. It took a bit of time
to figure out my problem but it was the front carb piston (HS4s) that
would stick after maintaining steady operation, partially elevated but
hung up trying to go up further. I had to monkey around with piston/jet
alignment (rise/drop motions) until I got it running smooth again.
Anyway, another thing to check along with other suggestions given. As
Paul mentioned earlier - what does the tach do when this happens? That
will help differentiate whether its electrical or fuel (assuming it is
not a mechanical tach from 1965 or earlier).

David Councill
64 B
67 BGT
72 B

-----Original Message-----

> From: mgs-bounces at autox.team.net [mailto:mgs-bounces at autox.team.net]
On
> Behalf Of Malcolm Jeffcock
> Sent: Sunday, August 15, 2010 6:29 PM
> To: mgs at autox.team.net
> Subject: [Mgs] hesitation
>
>
> well as some know I have installed a "new" engine which I must say is
> pretty good-compression of 150lbs across all 4. I have had electronic
> ignition installed and that's fine but I am having a hesitation
problem.
>
>
> When cold its ok or driving around town with a constant variation of
> revs but once I start to cruise along with revs at say 3300 and then I
> try to accelerate I have hesitation, at time severe, it also seems to
be
> brought on if I go up a hill as driving at steady rev level, it feels
> like it is only running on 3 or 2 cylinders when this happens, feels
> just like when head gasket went in the past. If the car is idling in
> driveway I can rev engine to high revs without a problem Could it be a
> situation of the fuel pump being able to provide enough fuel but not
> being able to respond to the additional demand for fuel as required
for
> acceleration?
>
> <snip>
>
> Malcolm