The Portal Hub: All things Pinzgauer, Haflinger, Volvo 303 and more.

The Portal Hub: All things Pinzgauer, Haflinger, Volvo 303 and more.

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View unanswered posts | View active topics It is currently Sat Oct 21, 2017 11:44 am



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 engine cranks for a long time before starting 
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Joined: Thu Mar 13, 2008 8:21 am
Posts: 50
Location: oklahoma
Post engine cranks for a long time before starting
The carbs have been rebuilt and sync'd, a new gear reduction starter placed and solid state ignition, but she takes a while to start.....could it be the sending unit or fuel pump.


Tue Oct 10, 2017 10:48 am
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Joined: Sun Dec 10, 2006 7:38 pm
Posts: 1240
Location: Southwest Wisconsin
Post Re: engine cranks for a long time before starting
Could be the fuel pump, clogged fuel filter, partially collapsed fuel lines or air leak into the fuel lines among other things.
I'd check the fuel filter first and then the fuel lines. If the incorrect fuel lines (SAE instead of metric) are used then it's possible to have air suction leaks at the connections to the carbs and fuel pump. Also the fuel lines do have a tendency to dry out and crack over time.
The sending unit should have no effect on starting.

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Paul C.
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'73 Swiss 710M
'72 Swiss 710M
'89 Puch 230GE


Tue Oct 10, 2017 12:15 pm
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Joined: Sun Dec 10, 2006 7:38 pm
Posts: 1240
Location: Southwest Wisconsin
Post Re: engine cranks for a long time before starting
Forgot to ask - by solid state ignition did you mean Pertronix or PinzSSI? If Pertronix, double check the clearance between the sensor and the magnetic collar. Too large a gap will affect starting.

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Paul C.
_________
'73 Swiss 710M
'72 Swiss 710M
'89 Puch 230GE


Tue Oct 10, 2017 12:17 pm
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Joined: Wed Apr 14, 2004 9:58 pm
Posts: 1367
Location: Idyllwild, CA
Post Re: engine cranks for a long time before starting
Quote:
but she takes a while to start.....
How long between starts does this happen? If you only attempt to start it every week or two then I would suggest that the carb bowls have dried up and are not getting refilled in a timely manner (priming issues due to air leaks, or a pump issue). If this happens within minutes of shutdown, then it is not likely to be fuel related - the carb bowls should still be full.

Put a carb level gauge on the front carb, and see what the fuel level is before, during, and after starting. This is a quick and easy test, and will decide what the next step should be.

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Jim M.
712W and 710M


Tue Oct 10, 2017 12:34 pm
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