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mainmech69
18-06-2014, 11:00 AM
unit cranks a long time wont start cleaned fuel screen.primed
system,if i crack bleeder it will stay running after it cranks awhile.
fuel cap off.thought may be in pump?

gravy258
23-06-2014, 11:26 PM
There's a one way valve between the filter and the pump(brass with a direction arrow), these have a habit of packing up. You can try blowing it out with compressed air or fit a new piece of pipe bypassing it.
If you open the jetstart and it runs for a bit it means its using the fuel return as its feed.

mainmech69
24-06-2014, 01:52 AM
installed new check valve and lift prime pump.still takes long time cranking before unit starts.was going to change out top of fuel pump?there is a slide plunger for speed solenoid and shut off sticking some what but freed rod.i have 3 units doing same thing . thanks for any help u can give do not have book on this engine.

Boss302
30-06-2014, 05:50 PM
Is the fuel filter plugged up. It will run with a plugged up filter if the jet start is open.

gravy258
02-07-2014, 11:44 AM
how many hours have the three done ?
do you change the oil regular ? As old oil tends to gum up the fuel head.
If they've done a heap of hours try adjusting the valve clearances.