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Hard Starting E6


superdog405
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Hi guys, I have a '90 superliner with a e6 350. It does'nt like to start under 40 degrees,but if you run the block heater over night it starts right up with almost no smoke.I also have a'89 superliner with the same engine, it's not been pluged in yet & always starts right up. Any ideas on this? Could it be something in th injection sys.? Thanks!

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Hi guys, I have a '90 superliner with a e6 350. It does'nt like to start under 40 degrees,but if you run the block heater over night it starts right up with almost no smoke.I also have a'89 superliner with the same engine, it's not been pluged in yet & always starts right up. Any ideas on this? Could it be something in th injection sys.? Thanks!

Hi there, late or retarded injection timing will do that as will low compression and/or injection pressure.

I would pull the pump and injectors and send them in for calibration.

The cost on having pumps rebuilt is about $200.00 per hole, and about $60.00 per injector. I had this done about six months ago on an E6-350 engine I've slated for a B61.

Rob

Dog.jpg.487f03da076af0150d2376dbd16843ed.jpgPlodding along with no job nor practical application for my existence, but still trying to fix what's broke.

 

 

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Thanks for the info Rob, very helpful!

Certainly hope it's just a calibration issue but I've seen popoff pressure in the nozzels be problematic too. An inline Mack engine should start very well down to about 25 degrees without heat applied. None of mine will crank 10 seconds before popping off at that temp. I'm assuming you have good batteries with an adequate cranking speed as that all applies too.

Rob

Dog.jpg.487f03da076af0150d2376dbd16843ed.jpgPlodding along with no job nor practical application for my existence, but still trying to fix what's broke.

 

 

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