1994skinautique - fuel pressure test

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   Hi everyone.

Planning to make a fuel pressure test on my 1994 Pro Boss. Not sure how to do it. I mean, should I check separately low pressure and high pressure pumps and what  normal FPS  should be. Any help will be appreciated.
Many thanks..

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sandro.zaal Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: October-08-2012 Location: Tbilisi,Georgia Status: Offline Points: 64	Post Options Post Reply Quote sandro.zaal Report Post Thanks(0) Quote Reply Topic: 1994skinautique - fuel pressure test Posted: May-10-2018 at 10:03am
	Hi everyone. Planning to make a fuel pressure test on my 1994 Pro Boss. Not sure how to do it. I mean, should I check separately low pressure and high pressure pumps and what normal FPS should be. Any help will be appreciated. Many thanks..

gt40KS Members Profile Send Private Message Find Members Posts Add to Buddy List Gold Member Joined: August-05-2017 Location: Wichita Kansas Status: Offline Points: 943	Post Options Post Reply Quote gt40KS Report Post Thanks(0) Quote Reply Posted: May-10-2018 at 6:29pm
	So before Pete jumps in with the question ... why do you need to check the fuel pressure? Is there a problem with the fuel system or the engine performance?
	JCCI 1995 Ski Nautique GT40

MrMcD Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3590	Post Options Post Reply Quote MrMcD Report Post Thanks(0) Quote Reply Posted: May-10-2018 at 7:23pm
	Your low pressure pump is just a supply pump. The engine will not run with this pumps low pressure. The high pressure pump takes your fuel from the low pressure pump and jacks up your fuel pressure to the engine , actual fuel pressure is regulated by the pressure relief valve on the fuel rail. I don't own a fuel pressure gauge but many times I have used my air conditioning gauges to attach and read my fuel pressure. It is nice to have a long hose so you can read the gauge while driving to get real numbers.

sandro.zaal Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: October-08-2012 Location: Tbilisi,Georgia Status: Offline Points: 64	Post Options Post Reply Quote sandro.zaal Report Post Thanks(0) Quote Reply Posted: May-11-2018 at 4:26am
	Firstly, Thank you. Well, the thing is, my boat has a power drops. 2 years ago, after winterizing, my ex driver added Motul Fuel System cleaner into the fuel and just after that, problems and problems.. Hardstart on cold, hard start within the skiing session - on warm engine, then one of 4 injectors died and I had to change all 4 ,because the old ones were out of production for a long time. Now, Ive changed the the injectors with its scoop and they run well (fingers cross ) BUT,! power loss is still annoying me. As, Im the only guy in my country, who has ski nautiqes, the only way to get any kind of support is here.

1994skinautique - fuel pressure test

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