Bill
Looks like you found the problem. A vacuum leak at the carb will
cause all the problems you described. I suggest you put a small tie wrap
around the rubber hose that connects to the carb so it is harder for it to
come off. Also check the hose for internal cracking, if there are any
replace the hose too.
Ron Fraser
-----Original Message-----
From: owner-tigers@autox.team.net [mailto:owner-tigers@autox.team.net] On
Behalf Of Bill Rogers Motorsport Memories
Sent: Sunday, April 24, 2005 6:15 PM
To: Tigers
Subject: What's the problem?
The last couple of (longish) trips we have made in the Tiger it started to
hesitate at low throttle openings. It did not seem to be noticeable under
heavy accel but the noise etc. might have been masking it. It has been
getting worse, and at one point, after puttering through 3 sets of lights,
it quit completely for a couple of secs before starting up again as we
accelerated down an on-ramp. The carb is an almost new Holley.
First I suspected fuel feed. It has 2 filters; a transparent one ahead of
the (solid state) pump was clean and I replaced the metal one before the
carb. As I did that there seemed to be plenty of fuel pressure and the float
needle/seat was obviously working. Nothing changed.
A chat with a 40 year Tiger owner suggested I look at electrics,
specifically the condenser. I checked the distributor and the point looked a
bit worn, so I replaced the points, condenser and rotor. Nothing changed.
A chat with the original owner suggested the coil could have been cooked. I
replaced it. The standard auto parts replacement is too long and skinny and
the cylindrical part needs to be 4" long and 2 1/4" dia. Mustang National
Parts Depot have one.
If that did not work I planned new plugs, plug wires, and a compression
check for leaking valves. :-(
As I replaced the coil I noticed that I had dislodged the distributor vacuum
advance line where it connects to the carb spacer hidden underneath the air
filter housing. I put it back together, started the engine and the problem
had disappeared.
Do you think I really dislodged the vacuum line or had it been off or very
loose all along?
Bill
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