86.5 will crank but wont start

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12 Jan 2014 13:08 #16610 by emmanuelli
After the cold front broke, i visited my garage as i do every week to start the car and warm it up for a few mins. Today, it crankned but there didnt seem to be combustion, so it wouldnt start.

Any thoughts? The car did start normally last week.

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13 Jan 2014 11:37 #16622 by wallyp
1) Get a helper - the helper doesn't have to be expert - a twelve-year-old will do if they follow instructions.
2) Kneel by the rear bumper while the helper operates the starter (without touching the throttle, just in case it starts). The fuel pump should whine or whirr while the starter is operating. If not, check the fuse, then the relay.
3) If you have an operating fuel pump (there is fuel in the tank, right?), get a 4' piece of rubber or plastic hose. Stick one end in your best ear, hold the other end on an injector, and have the helper turn the ignition switch on. There should be no clicking from the injectors. Have the helper operate the starter - there should be regular clicking from the injectors. If not, check the LH relay.
4) If you can get one, use an induction-pickup timing light to check for spark on each of the plug wires while the helper operates the starter. If there is no high voltage pulse, the problem may be the ignition switch, the ignition amps on the front valance panel (in front of the radiator), a faulty crank position sensor, a faulty connection, etc., etc.

In my opinion, starting the engine for short periods is a bad idea. Put a battery maintainer on the car and let it sleep...

Wally Plumley
928 Specialists
www.928gt.com

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13 Jan 2014 22:51 #16634 by emmanuelli
hi wally:

i'll see about checking those items.

thanks a lot!

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14 Jan 2014 19:31 #16639 by 928mac
Stick one end in your best ear,

Laughing my ass off, oh my god, only something us old guys would understand

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14 Jan 2014 22:35 #16641 by emmanuelli
i guess im not that old. but i'll surely use my best ear.

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20 Jan 2014 15:16 #16670 by emmanuelli
went to visit my car yesterday. cranked it and guess what, it stared. without a hitch.
i let it warm up, went out for a ride. it all seemed in order. yay!

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22 Jan 2014 22:22 #16687 by 928mac
My car did that once, ... only once. I was distraught and new that it was maybe not a good idea but thought , screw it. So I went to start the car, ... it cranked fine, ... everything was normal but it would not fire. I hooked the cables from the truck up to it because dam-it I was taking the Porsche. well it would not fire, not ah hint. So off to Edmonton I went in the truck because it was getting late.
When I got home 2 days later, I pulled into the driveway and hit the garage door button to walk into the house. As I walked by the car I reached in with the key and the Beyatch fired right up.
I figure it was gods will as I know he is a car fan, yip it says so in the bible, it says he arrived in a fury ;)

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