raydurr Posted April 25 Share Posted April 25 Hello Does anyone remember the part number for E7 ETech 100 psi fuel return valve?Goes on side of block near 4-5 injector. I am in need of a new higher pressure valve. Quote Link to comment https://www.bigmacktrucks.com/topic/74091-etech-100-psi-fuel-return-valve/ Share on other sites More sharing options...
The Heinz Posted April 25 Share Posted April 25 I know which valve you're talking about, but I can't find the part number for the 100 psi version. All the ones I can find are the 54 +/-7 PSI or lower. I'll see if I find anything, but hopefully someone else can chime in as well. Quote Link to comment https://www.bigmacktrucks.com/topic/74091-etech-100-psi-fuel-return-valve/#findComment-550452 Share on other sites More sharing options...
The Heinz Posted April 25 Share Posted April 25 I was able to get a hold of a spec sheet that had parts going up to 80 PSI, nothing on a 100 PSI version. The 80 PSI option supersedes to 25501698, limited availability in Mack warehouses, but obtainable. No PAI cross that I could find. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74091-etech-100-psi-fuel-return-valve/#findComment-550461 Share on other sites More sharing options...
Joey Mack Posted April 25 Share Posted April 25 They stopped using 100 PSI regs.. 80 is recommended... 100 can possibly blow out the E.U.P. o rings.. 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74091-etech-100-psi-fuel-return-valve/#findComment-550462 Share on other sites More sharing options...
The Heinz Posted April 25 Share Posted April 25 1 hour ago, Joey Mack said: They stopped using 100 PSI regs.. 80 is recommended... 100 can possibly blow out the E.U.P. o rings.. Thanks for that info, might help me in the future. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74091-etech-100-psi-fuel-return-valve/#findComment-550466 Share on other sites More sharing options...
fjh Posted April 26 Share Posted April 26 19 hours ago, Joey Mack said: They stopped using 100 PSI regs.. 80 is recommended... 100 can possibly blow out the E.U.P. o rings.. Yup they reduced this as Joey said ! As long as the fuel pressure doesn't drop off when the rpms are increased under load you should not be having power issues related TO FUEL PREASSURE ! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74091-etech-100-psi-fuel-return-valve/#findComment-550510 Share on other sites More sharing options...
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