[DeTomaso] 1972 pantera

[JDeRyke at aol.com]

In a message dated 4/1/09 6:37:56 PM, spkorb at gmail.com writes:

> Yes, please check the timing; it's a common problem.....
> 
A second common timing problem is the outer ring of 37-year-old balancers 
spinning toward the 'retard' side. Trying to reset timing if this has happened 
will not work; what would be needed is to find true Top Dead Center relative to 
#1 piston. Then, ignition timing can be set correctly.
A third common problem related to timing is a badly worn timing chain jumping 
a few teeth on the cam sprocket. This also tends to go toward 'Retard'.
A fourth is a partially or completely sheared spring-pin holding the 
distributor drive gear in place. This happens to stock AND aftermarket distributors. 
But before tearing the motor apart, I'd try borrowing a 'known-good' 4bbl 
carb of any size and mounting it on the troublesome engine. If it still 'chugs', 
the problem is obviously NOT the carb. Alternatively, take your carb to a 
friend's house and put it on his Mustang/big-block Chev/anything it fits. If it 
'chugs' on a different engine , it is something in the carb. If not, its 
'somewhere' in all those other suggestions you've received. And guaranteed, it'll be 
something simple. Good luck- J Deryke


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