Engine/Transmission (1998.5 - 2002) High pressure,hard starting?

[mrineer]

Can 24 to 26 psi into the VP44 cause hard starting ? If so, please explain what's happening to cause this problem. (new VP44 1 month ago and FASS installed 8 months ago)

















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99 3500 DRW 4WD chassis cab 19. 5's FASS pump air sep 4"SS exhaust westack fuel guage optima yellow top 12000LBS always

 

[AKAMAC]

There are reports of high pressure/ hard start conditions on here. Most were from folks who bypassed the momentary pump cycle on start up.

The recommended psi is ~14, that said, some run it higher but not at start up. I can't remember the exact cause but I believe it had to do with the relief valve on the VP44 letting air into system. No, you can't quote me on that. . Try a search on H. P. start problems.

Hope this helps. Mike

 

[LowFly]

Check this post out.....



Its very odd that you would see an older system with the OLD PS-1002 spring above 21 PSI. Not calling you a liar... but i would suggest checking the your gauge to see if its reading correctly. ALSO make sure you have NO restriction on the return from the FASS back to the tank.



With that being said..... contact your FASS dealer with your serial number and request our updated PS-1002 spring under wnty. This will bring pressure down to about 13-14 PSI (95 GPH/150 respectively)