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Tricarb Mystery

To: "Healeys" <healeys@autox.team.net>
Subject: Tricarb Mystery
From: "Rich C" <richchrysler@quickclic.net>
Date: Sun, 19 Jun 2005 23:09:28 -0400
Here's a situation that has a number of the experts really stumped:

Totally rebuilt tricarb Mk 2 engine with fully rebuilt carbs.

Problem:
- number 2 carb is not working, as in... will not pull fuel into cylinders 3
and 4.
- therefore engine is running virtually on carbs 1 and 3 feeding and running
cylinders 1and 2, 5 and 6 respectively
- #2 carb soon becomes cold to the touch while 1 and 3 warm up normally

 Upon further investigation:
- all carbs completely rebuilt using genuine S.U. parts.
- fuel supply getting to all 3 carbs
- good comression on all cylinders
- good spark at all plug electrodes
- even tried substituting plugs, no difference.
- with engine idling there is absolutely no draw into #2 carb throat and the
fuel just sits there in the throat of the carb.
- temporarily plugged and eliminated balance pipe at inlet ports to try to
further isolate symptoms.
- with all carbs removed, there is good srtong suction pulling into all inlet
ports equally.

How's that one for a puzzler? We're stumped, any ideas?

Rich Chrysler




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