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Discussion Starter #1
Hey all, having an issue on the R32 build, just fitted a FPR but after the pump primes the pressure drops instantly to '0' I have replace the one way check valve on the feed line from the pump and also replaced the FRP as I thought it might be faulty but even with the new one it drops instantly to '0' unless you clap the return line after prime it holds?

Any ideas?
 

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Super Moderator
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8,969 Posts
Could be an injector stuck open or leaking around the seals.
 

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I had that happen on an evo, fpr wouldn't rise with revs it dropped instead. Turned out the diaphragm was stuck, gave it a 10psi blast of air into the vacuum port and all worked fine after that. Might be worth a try, I had even fitted a new fpr to the evo and it was still at the same carryon until it met the compressor lol
 
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