No injector pulse

Forum for Infiniti M35 and M45, and Nissan Fuga owners.
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Xearo101
Posts: 3
Joined: Fri Jul 26, 2013 4:46 pm
Car: 2011 Infinit M37
1991 Ford F150
1971 Lincoln Continental
Location: Orlando, Fl

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I recently overhauled (new rings. valve stems seals, chain tentioners, and all gaskets/o-rings/RTV) a 2011 M37 engine. Now after install and prime I have no injector pulse. Checked for a short to ground on all signal wires and checked continuity from ECM to injector harness. All checked out good, grabbed a few cam sensors and still no injector signal. Fuel pressure is there and we have spark. The starter engages and the engine turns over but does not start. So my question would be, is there some kind of anti-theft or specific sensor I should look into? All-data (No-Data) is very limited on a proper wiring diagram for the crank and cam sensors and mostly just tell me to use Consult, which of course, I do not have. Any and all input would be appreciated. Thanks


lovemycarM35
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Joined: Sun Nov 14, 2010 6:19 am
Car: 2014 Lexus GS 350
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Can I Ask why would you need to do this on a two year old car was it having issues how many miles

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Xearo101
Posts: 3
Joined: Fri Jul 26, 2013 4:46 pm
Car: 2011 Infinit M37
1991 Ford F150
1971 Lincoln Continental
Location: Orlando, Fl

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Sure, the car was a previous lease. "They" apparently never change the oil from day one. Nissan voided the warranty because of sludge. When i got the car it had a fouled plug on the #1 cylinder. The coil on that cylinder was also replaced as it was weak. After the plug and coil was replaced it was running on all six. But it was burning oil very badly on that cylinder, fouled the next plug.

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Xearo101
Posts: 3
Joined: Fri Jul 26, 2013 4:46 pm
Car: 2011 Infinit M37
1991 Ford F150
1971 Lincoln Continental
Location: Orlando, Fl

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34,211 miles on the counter.

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svard75
Posts: 1564
Joined: Mon May 11, 2009 3:26 am
Car: 06 M35x
Location: Toronto, Ontario, Canada

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I'll throw some cents in. Try connecting the bcm to the Ecu and use the paired key to rule out security issues. On some alarm systems they use relays to deactivate the fuel pump when armed but u said there is pressure so perhaps they keep the injectors from firing?


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