[Healeys] Running Pretty Rich

[Steve B. Gerow]

Mark LaPierre wrote:
>>>
Date: Sat, 2 Oct 2010 06:25:53 -0400
From: "Mark LaPierre" <lapierrem at sbcglobal.net>
Subject: [Healeys] Running Pretty Rich


- I no longer have the intake manifold drip tubes installed.
They have been sealed off.     Could this be a source of my overly rich
exhaust?
<<<

Mark,
First you need to return it to stock - the manifold drain pipes are there for a reason - factory engineers don't get paid to reduce the profit margin by putting unnecessary parts on a car!

I've had good results using a dial caliper to adjust the main jet drop. Take the carb domes off and measure the jet drop for both jets. For instance if one is .055" down and the other is .045" down, use the mixture screws to adjust both to .050".
Both should be less than .090" down - it it's more than that you're into serious richness territory.

Check each jet needle to make sure the shoulder is flush with the under surface of the carb piston.

Also make sure your choke is returning both jets to the uppermost position when the choke is all the way in.


-- 
Steve Gerow
Altadena, CA
BN6