| Distributor Bushing Failure [message #344514] |
Mon, 24 June 2019 16:42  |
rvanwin
Messages: 325
Registered: April 2007
Location: Battlefield, MO
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I have been working with a GMC owner who has a Howell/EBL efi system installed. He emailed me that his distributor, a computer controlled distributor from a Olds 307 obtained from a junkyard, failed. After further study, there was debris inside the distributor that turned out to be shredding from a bushing. He put a spare distributor on and within 100 miles it had the same failure. The other change that was made just prior to these failures was that the oil pump was replaced. Wonder if anyone has heard of a replaced oil pump causing this kind of distributor failure? The Olds distributors have built-in end play - I'm wondering if the oil pump could have a longer drive shaft that is forcing the distributor shaft up eliminating the end play upon initial installation then during running is putting thrust pressure onto the edge of the bushings causing it to shred?
Randy & Margie
'77 Eleganza II '403'
Battlefield, MO
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