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Starting Prob.
Posted: Mon May 09, 2005 4:07 am
by housercdale
I just got it back together with a new 450 kit and now have problems starting it. Sometimes it will start right up and other times it cranks for a while then starts, but then sometimes not at all. I have reset the offsets and no change. Any ideas?
Posted: Mon May 09, 2005 4:12 am
by jwheat
Have you recalibrated the throttle position sensor?
Posted: Mon May 09, 2005 4:16 am
by housercdale
Ya I did. Didn't make a diff.
Posted: Mon May 09, 2005 4:22 am
by jwheat
What settings are you using for your offset and flowrate?
Posted: Mon May 09, 2005 4:29 am
by housercdale
Offset is .80 and the flow rate is 2500.
Posted: Mon May 09, 2005 12:28 pm
by jwheat
Change your offset to 1.10 and try it. If it cranks better, then that will be a good starting place to start making your fine tune adjustments.
Posted: Mon May 09, 2005 12:33 pm
by housercdale
I'll try that when I get home tonight. Thanks
Check the obvious
Posted: Mon May 09, 2005 4:09 pm
by kgd57
Check that you don't have any pinched fuel lines. Ckeck under tank. If you use race fuel the o-rings in the fittings could be swollen. Use good o-rings.
kgd57:cool:
MX- .75, 2500
Posted: Tue May 10, 2005 1:48 am
by housercdale
Changed the offset to 1.10 and no change. Also the o-ring does not look swollen. I am going to get a new plug tomarrow, but dont know if that will help as mine does not seem fouled. Does anyone know the gap for the plug? It gets fuel, but how do you know if it is enough? I have another pump, my try that.
Posted: Tue May 10, 2005 2:33 am
by jwheat
Was it cranking fine before you changed the motor? If so, go back over all of your connections and grounds. Make sure that you didn't pinch any of your vacuum lines when you installed the engine. Check and see if your injectors connectors are tight. Make sure your crankshaft position sensor is connected good.