Suzuki DF 70 Hard to start

[BOAT DOCTOR]

I have a 2000 Suzuki DF 70.From time to time it is hard to start.I changed spark plugs,all fuel filters high pressure,low pressure,racoreand even check screen on bottom of high pressure pump.check low pressure pump daiphram it was okay.copression is good 190,190,200,190 on all cyclinders.checked fuel pressure at key on power i have 38 psi the same when running the motor and after a 5 min sit psi only drops a couple psi all checks out.dont know what else to check but it is driving me crazy does anyone know anything i might have missed or know anything i should try or check

 

[DaveG]

Re: Suzuki DF 70 Hard to start

Try running it with a new fuel line and squeeze ball going to a separate portable gas tank. My pick up in the boat's gas tank was sucking small amounts of air at random times and gave me all kinds of weird intermittent problems.