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[Mgs] hesitation

To: mgs@autox.team.net
Subject: [Mgs] hesitation
From: Malcolm Jeffcock <msjeffcock@eastlink.ca>
Date: Sun, 15 Aug 2010 22:29:18 -0300
well as some know I have installed a "new" engine which I must say is pretty 
good-compression of 150lbs across all 4. I have had electronic ignition 
installed and that's fine but I am having a hesitation problem. 

When cold its ok or driving around town with a constant variation of revs but 
once I start to cruise along with revs at say 3300 and then I try to accelerate 
I have hesitation, at time severe, it also seems to be brought on if I go up a 
hill as driving at steady rev level, it feels like it is only running on 3 or 2 
cylinders when this happens, feels just like when head gasket went in the past. 
If the car is idling in driveway I can rev engine to high revs without a 
problem Could it be a situation of the fuel pump being able to provide enough 
fuel but not being able to respond to the additional demand for fuel as 
required for acceleration?

I should mention that the original SU pump was replaced with an aftermarket 
3.5-5.0 lib pump...

I adjusted the fuel mixture to make it richer but that didn't help at all...any 
thoughts?

Malcolm 
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