NAS 110: No Start - Defender Source
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  #1  
Old November 6th, 2016, 10:54 PM
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Pete Gerbine, III
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NAS 110: No Start

Having a no start issue with the NAS 110. Fuel pump is functioning and getting fuel up to the fuel rail. Getting spark out of the distributor to the plugs. Engine turns over but not firing up. Any ideas?

Thanks.
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  #2  
Old November 7th, 2016, 03:29 AM
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Some things to try


1. White wire with black tracer dislodged from coil - This sends a signal to the ECU to run the second fuel pump
2.AICV stuck - take it out and clean it - try starting with foot to the floor on the gas pedal - Jimmy made this work on mine but i never did.
3.big air leak.... is the fat hose disconected?
4. Chicklet broken ( on a 90 its in a wire loop by the MAS )
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Old November 7th, 2016, 06:24 AM
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[QUOTE=leastonce;780381]Some things to try


"1. White wire with black tracer dislodged from coil - This sends a signal to the ECU to run the second fuel pump"
2nd fuel pump????? Don't confuse the poor guy! You mean the 2nd relay that runs the EFI part of the system.
Strong spark? Fuel PSI?
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Old November 7th, 2016, 06:59 AM
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Takes 2 mins, try unhooking the return line off the fuel rail and have someone turn the key on briefly. If no fuel comes past the regulator, pressure is not sufficient.

When you say you have spark to the plugs did you pull one, put the wire back on ground it and see the spark ?
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Old November 7th, 2016, 07:12 AM
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Pete Gerbine, III
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[QUOTE=Roverchef;780391]
Quote:
Originally Posted by leastonce View Post
Some things to try


"1. White wire with black tracer dislodged from coil - This sends a signal to the ECU to run the second fuel pump"
2nd fuel pump????? Don't confuse the poor guy! You mean the 2nd relay that runs the EFI part of the system.
Strong spark? Fuel PSI?
Ha!....yeah...that 2nd fuel pump talk threw me off a bit!

I have recently replaced the fuel pump and the IACV, but will take a peak at it look for the wire from the coil. I have no idea what the full PSI is but checked for flow after the fuel filter and at the fuel rail, and it seems to be making its way up to the engine just fine. Removed a plug wire and stuck a screw driver in it and got it close to a ground point and spark seemed strong to me...jumping maybe a 1/4" or so.

Thanks for the replies and I will poke around at the things mentioned. Please let me know if any other ideas come up.
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Old November 7th, 2016, 07:33 AM
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Any chance its just flooded and a fresh set of plugs will start it ?
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  #7  
Old November 7th, 2016, 07:48 AM
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Fuel shouldnt just be "making its way up to the rail" it should be there with extreme prejudice (~45psi).
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