The recommendation from the shop were outstanding. The advice that i was told to try worked excellent for one of our cars.

I learned of Johns passing recently. I shared a decades long friendship with John....John Marquardt 1947 - 2020 RIP.The best resource for vintage corvette restoration. John is great refurbishing vintage mechanical corvette fuel injection. Highly recommend

John is an absolute wizard at the rebuilding and resurrection of Rochester fuel injection units. Not only did he save mine from extension, he did it at a most reasonable cost and it has worked flawlessly since I reinstalled it on my 1958 Corvette.