[Spits] Intermittent miss turns out to be fuel tank debris

Nick Moseley nmoseley at telus.net
Sun Aug 12 16:11:07 MDT 2012


Firstly, sorry to those of you for whom this is a cross post.

Here's the question, below is the story:

-what are the groups' experiences with which fuel tank sealers? The reviews
on Eastwood's site on their kit do not bode well.

 

 

The story to date: I've been chasing an intermittent miss on my 80 Spit. The
issue seems to have been clouded by a tach that jumps about at around 4700
rpm. The real issue though, is that the engine cuts out for periods of
between 1-3 seconds after sustained running, or even bursts up to and over
5,000 rpm. In the latest incident, the engine did not restart, and I coasted
off the slalom course. There is a clear fuel filter near the carb, which was
empty of debris and of fuel. Eventually, cranking the engine to actuate the
(new) fuel pump filled the filter bowl and fed the carb, enabling a
re-start.

Today, I pulled the fuel tank, and found a leak, and debris in the bottom of
the tank. That leads to a possible conclusion that the debris was blocking
the fuel line. This would agree with the symptom where the intermittent
running often occurred after a fuel fill up. (Ain't 20/20 hindsight
wonderful!?).

Having pulled away the tank cover in the trunk, a very slow drip of fuel was
leaking, which explains the aroma of gasoline.

Is there any sense in getting a tank sealer kit, or would I be better to
just get a new tank? The POR kit is $72 or so, and a new tank is $200. I
have a couple of older tanks here, and none is close to pristine.

Many thanks for your thoughts and experiences

 

Nick Moseley



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