SR is having trouble starting after rebuild, give me an idea why. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Csomme · 09-13-2010, 12:56 PM

ARG. Aggravating past couple of days. So, I bought a car that had an SR in it that was KNOWN to run for years before it got rod knock. It was originally an Automatic with HICAS and ABS, that was converted to manual, long before I purchased it.

I bought it, pulled the motor, pulled the ABS, pulled the HICAS, rebuilt the motor, threw that shit back it, plugged everything up essentially the way it was before, and now it's not starting.

The first issue I had was the starter not turning over when I turned the key, but it was getting power, just not a signal to do anything with the power, so I wired up a switch to the starter, and tried to start the car.

The starter spins the motor over, but It will not start.

-Checked for spark, Got it, yellowish in color.
-Checked that the injectors were firing, yes,
-Pulled the fuel rail just to check, and all the injectors are firing at the exact same time. Should this be happening?
-Checked timing and restabbed CAS.

Right now I'm thinking that it might be flooded from me trying to start it too much with maybe having a plug wrong or something, so I'm letting it air out, and pushing the fuel out, going to give it a try again here in a while.

In the mean time, anyone have any ideas?

It's not the first Motorswap or rebuild I've done, I've always ran into problems, but this one seems to baffle me. lol Any help would be appreciated.

Thanks guys.

R@ddy · 09-13-2010, 01:08 PM

something alot of people get wrong is the mechanical timing. make sure its set correctly

Csomme · 09-13-2010, 01:12 PM

Quote:

Originally Posted by s13_kidd

something alot of people get wrong is the mechanical timing. make sure its set correctly

Sorry, I should have clarified that when I checked the timing, I checked the timing. lol Mechanical and CAS timing.

Csomme · 09-13-2010, 07:16 PM

Anyone?

I put more fuel in the tank, replaced the ignitor AND the CAS with KNOWN working ones, I checked to make sure all the spark plugs were firing. I've checked Timing a million and 12 times. I'm at a complete loss. I'm dunmfounded. For once in my life I have no clue where to go.

steve shadows · 09-13-2010, 09:42 PM

In my experience on consulting and builds the last 10 years, the SR motors or any other Nissan for that matter is that it's usually the wiring harness, or some shotty connection. My no.1 recommendation if you have a single doubt in your harness quality pay the money to replace it with a fresh oem one

Csomme · 09-14-2010, 04:47 PM

Alrighty Steve, I'll try a couple more things, and if that doesn't work, I'll grab a new OEM one and start from sctrach.

Thanks bud.

Luvs2slide · 09-14-2010, 05:14 PM

So tis cranking but not "starting?"

09-13-2010, 12:56 PM	#1
Csomme Zilvia FREAK! Join Date: Feb 2009 Location: north carolinazzz Age: 34 Posts: 1,009 Trader Rating: (4) Feedback Score: 4 reviews	SR is having trouble starting after rebuild, give me an idea why. ARG. Aggravating past couple of days. So, I bought a car that had an SR in it that was KNOWN to run for years before it got rod knock. It was originally an Automatic with HICAS and ABS, that was converted to manual, long before I purchased it. I bought it, pulled the motor, pulled the ABS, pulled the HICAS, rebuilt the motor, threw that shit back it, plugged everything up essentially the way it was before, and now it's not starting. The first issue I had was the starter not turning over when I turned the key, but it was getting power, just not a signal to do anything with the power, so I wired up a switch to the starter, and tried to start the car. The starter spins the motor over, but It will not start. -Checked for spark, Got it, yellowish in color. -Checked that the injectors were firing, yes, -Pulled the fuel rail just to check, and all the injectors are firing at the exact same time. Should this be happening? -Checked timing and restabbed CAS. Right now I'm thinking that it might be flooded from me trying to start it too much with maybe having a plug wrong or something, so I'm letting it air out, and pushing the fuel out, going to give it a try again here in a while. In the mean time, anyone have any ideas? It's not the first Motorswap or rebuild I've done, I've always ran into problems, but this one seems to baffle me. lol Any help would be appreciated. Thanks guys.

09-13-2010, 09:42 PM	#5
steve shadows Post Whore! Join Date: Aug 2003 Location: LA and OC Posts: 8,202 Trader Rating: (5) Feedback Score: 5 reviews	In my experience on consulting and builds the last 10 years, the SR motors or any other Nissan for that matter is that it's usually the wiring harness, or some shotty connection. My no.1 recommendation if you have a single doubt in your harness quality pay the money to replace it with a fresh oem one __________________ Like Me on FaceBook !

09-14-2010, 05:14 PM	#7
Luvs2slide Zilvia FREAK! Join Date: Oct 2006 Location: NW Florida Age: 43 Posts: 1,490 Trader Rating: (81) Feedback Score: 81 reviews	So tis cranking but not "starting?" __________________

09-13-2010, 01:08 PM	#2
R@ddy Nissanaholic! Join Date: Jul 2008 Location: SoCal Age: 35 Posts: 1,632 Trader Rating: (32) Feedback Score: 32 reviews	something alot of people get wrong is the mechanical timing. make sure its set correctly

09-13-2010, 07:16 PM	#4
Csomme Zilvia FREAK! Join Date: Feb 2009 Location: north carolinazzz Age: 34 Posts: 1,009 Trader Rating: (4) Feedback Score: 4 reviews	Anyone? I put more fuel in the tank, replaced the ignitor AND the CAS with KNOWN working ones, I checked to make sure all the spark plugs were firing. I've checked Timing a million and 12 times. I'm at a complete loss. I'm dunmfounded. For once in my life I have no clue where to go.

09-14-2010, 04:47 PM	#6
Csomme Zilvia FREAK! Join Date: Feb 2009 Location: north carolinazzz Age: 34 Posts: 1,009 Trader Rating: (4) Feedback Score: 4 reviews	Alrighty Steve, I'll try a couple more things, and if that doesn't work, I'll grab a new OEM one and start from sctrach. Thanks bud.