Cummins conversion brakes
Hi I'm doing a conversion into a 1980 chevy. I need help with the brakes the cummins has the vacuum pump on power steering pump, when I hook up the vacuum line to the chevy master it sucks the the peddle to the floor and when I take the vacuum line off the peddle comes back up. I don't know if the booster is bad or the dodge vacuum pump has touch vacuum. Need help!!
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I am going to say a bad booster.. on my suburban with a cummins 12 valve and the later vacume pump to the stock booster mine work great! good luck!!:tu:
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My blazer works great also must be the booster do you have a check valve on the vacuum line idk if that makes a difference cause my blazer already had one so kept it in place
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I don't have a check valve I can try that. Thanks for the help
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ya mine has the check valve in that plastic elbo that pops into the grommet on the booster. works great
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