Forum Discussion
Me_Again
Jan 18, 2019Explorer III
The failures of the early CP4's both 1 and 2's was the piston with a roller follower getting turned sideways to the pumps cam lobe. Bosch was unwilling to pay the holder of a patent to keep the piston from turning in the bore.
The Metal that contaminate the fuel system was from the roller and cam lobe.
They have been working to fix the issue.
This page shows a picture of a damaged roller. Fig 3
https://www.matec-conferences.org/articles/matecconf/pdf/2017/32/matecconf_icce2017_00020.pdf
This may be the Edelbrock patent that Bosch was unwilling to pay royalties to use.
https://patents.google.com/patent/US6473964B1/en
The Metal that contaminate the fuel system was from the roller and cam lobe.
They have been working to fix the issue.
This page shows a picture of a damaged roller. Fig 3
https://www.matec-conferences.org/articles/matecconf/pdf/2017/32/matecconf_icce2017_00020.pdf
This may be the Edelbrock patent that Bosch was unwilling to pay royalties to use.
https://patents.google.com/patent/US6473964B1/en
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