750 zxi hard restart /pop off pressure

[billwr]

have 1995 750 zxi dual carbs jet ski. its hard to start w warm it starts and dies then u can restart w starting fluid (yes starting fluid is bad not my ski freinds). wanted to ck pop off pressure i just installed a primmer bulb to see if that would help but while i have it apert i wanted to ck pop of pressure any sugestions would be apreciated also thx in advance

[Technical Support]

Re: 750 zxi hard restart /pop off pressure

Check your compression when warm; make sure it’s still 120 or better. You may have a bad check valve letting the fuel tank loose pressure and prime, if you open the gas cap do you hear pressure come out? If not then locate the 2 check valves coming of the top of the tank and see if 1 of them is stuck open if you can blow air through it from either side than it is bad they only work as one way valves.

[billwr]

Re: 750 zxi hard restart /pop off pressure

okay fuel tank works is pressurized no compression ck yet but was playing w it, looking for vacume leaks. thought that might be the problem . i found that rear seal on engine has a vacume leak spryed it w try flow and motor dies next question can i change it w/o removing engine ?? or is it easer to do w removed or do they tend to leak and its okay ??? the motor is about 4 yo old i live in seattle its used about 2 days a month in summer 10 times a year thx

[billwr]

Re: 750 zxi hard restart /pop off pressure

hey also wanted to add it starts great out of water all of the time just when in water is it not starting

[Technical Support]

Re: 750 zxi hard restart /pop off pressure

The seal is the issue then, when starting under a load its sucking more air and leaning it out. The cases have to be split to change the seal.