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

[Alex & Janet Thomson]

If you are looking for a fuel tank sealing product, I have had excellent
results from the product that is sold by "The Shop". I have used this on
several older farm tractors (gasoline engines) and have never had a problem
with the material sloughing off inside the tank. I think the oldest
applications is now well over ten years old. Check it out at

http://www.theshopproducts.com/products_gastank-sealer.html 

I have used it in a 1939 John Deere B, an early 1950's Case, and an early
1950's John Deere 50. These tractors are fed the current diet of gasoline
that we get in Connecticut and there is no problem that I can see.

Alex Thomson


-----Original Message-----
From: spitfires-bounces at autox.team.net
[mailto:spitfires-bounces at autox.team.net] On Behalf Of Nick Moseley
Sent: Sunday, August 12, 2012 6:11 PM
To: Spitfires at autox.team.net; nass at yahoogroups.com
Subject: [Spits] Intermittent miss turns out to be fuel tank debris

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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