When the truck is parked on a slight uphill incline, it seems to take a bit longer to start and it will do a small rev up and down and back to normal. Parked on a horizontal lot, it starts just fine. I suspect maybe I need to change the fuel filter at least? Maybe something else is up?
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M-923 start's uphill longer
- Thread starter Micmada
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Could be the pickup tube in the tank. They are known to rust and if the level is not full it can suck a little air.
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You have an air leak in the fuel line some place, or the o-rings in the primer pump are bad, or a leak around around the fuel filter.
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Ok, so I do have a leak by the Pt pump “back plate” next to the intake. It seems to be a seal or a pressure damper needing replacement perhaps. In the first few seconds of this video they show the pressure damper and I believe it is the plate holding the pressure side of my pump which is leaking. It would explain the eratic start because the damper is there to prevent pressure spikes and lows, which is what my truck goes through when it starts, racing first and then choking and then idling ok.
Turns out there supposed to be a gasket between the Damper assembky and the the PT pump that was not there. I had ordered one but got ahead by making a gasket myself with black oil resistant RTb. The truck starts like a champ at the first turnover of the starter.
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Glad you found the problem and thanks for circling back with the fix
silverstate55
Unemployable
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HA, like the “circling back” reference.... 