Need help! Fresh Rebuild Wont Turn Over

Justen · 07-30-2009, 04:20 PM

I just finished hooking everything back up after a rebuild on my 90 TII, now streetported, walbro pump, emissions removed, warmup selonoid/box removed, rats nest gone, but i kept the oil metering pump. Filled the oil and put some coolant in it. Tried to start it yesterday, and the starter wouldnt turn the motor over. Tried a couple times and my warning buzzer went off. I used a jumper pack for the battery to make sure i had enough juice. I DO HAVE SPARK. Went underneath the car and the starter was hot, so i had it checked at Advance. it failed so i bought a new one. Put the new stater in today and it does the same damn thing as it did yesterday...

Is there any part of the start-up procedure i'm missing?
Do i need to fool the ecu or anything?
Any connectors for emissions that should be left on or grounded?
..i havent hooked up the ABS yet

Ideas?

To_Slow · 07-30-2009, 04:31 PM

How hard is it to turn the motor over with a wrench??? If it takes allot of effort,,, you might have crushed something inside and locked it up a bit where your starter cannot make the additional effort to turn your motor over..

Good luck

vex · 07-30-2009, 06:06 PM

Engine has nothing to do with ABS.

While you were rebuilding it did you check the engine prior to installing it back into the car again?

Make sure it turned freely?

Ensure plenty of oil?

Did you use a template for the port or did you eyeball it?

Did you bevel the edges? (There's a slew of questions that go along with it--but I'll wait till those are answered before preceding along those lines)

Does your starter sit flush like it should?

Does the start attempt to turn but does not?

Did you hook up the starter correctly?

Did you pop any fuses while attempting to crank?

Did you prime the oil system, did you assemble with 20w-50?

Are your injectors firing?

Are you ensuring voltage is able to reach the injectors?

Mobius · 07-31-2009, 08:25 AM

The only times I have seen the starter not be able to turn a rotary over is when it had either seized the bearings onto the E-shaft do to lack of oil (on a running car) or when a small bolt had been dropped into a motor during a rebuild and had jammed in the stationary gear.

Not saying those are the only options, but the starter has enough power to chug the car along when it's in gear, so if it can't turn the motor over there is something seriously wrong.

Justen · 07-31-2009, 02:22 PM

got it turning. Turns out the solenoid switch wire had a bad connection, wasnt getting enough power to it. Fixed, turns over strong now.

Doesnt seem to be getting fuel now. took the plugs out, cranked it over a few more times to check for gas.. can't smell anything. i'm thinkin my fuel filter may be clogged to shit. Walbro pump seems to be working fine tho, turns on with the ignition like it should.

Leaving the gas cap open should depressurize the system, correct?

NoDOHC · 07-31-2009, 09:46 PM

I don't understand, the fuel system pressure is maintained by the fuel pump. The gas cap has little to nothing to do with it.

If you want to check fuel pressure, tap a guage into the line.

I really doubt that your fuel filter plugged itself while you were replacing the engine.

Make sure that your AFM is installed properly and that your injectors have 12V to one side of them with the key on.

Does your tachometer bounce or read RPM as you are cranking?

Ender · 08-01-2009, 04:34 AM

Also make sure you didn't hook the fuel feed line to the wrong end of the fuel system. The primary injectors should be getting fuel from the tank first, then the secondaries, then the fpr. If you were to hook it up backwards I'm not sure if the fpr would allow any fuel through, and even if it did you'd have extremely low fuel pressure.

Boostmaniac · 08-10-2009, 04:29 AM

Quote:

Originally Posted by Ender

Also make sure you didn't hook the fuel feed line to the wrong end of the fuel system. The primary injectors should be getting fuel from the tank first, then the secondaries, then the fpr. If you were to hook it up backwards I'm not sure if the fpr would allow any fuel through, and even if it did you'd have extremely low fuel pressure.

This.

07-30-2009, 04:20 PM	#1
Justen In Too Deep Join Date: Jun 2009 Location: Clifton, NJ iTrader: (3) Posts: 112 Rep Power: 16	Need help! Fresh Rebuild Wont Turn Over I just finished hooking everything back up after a rebuild on my 90 TII, now streetported, walbro pump, emissions removed, warmup selonoid/box removed, rats nest gone, but i kept the oil metering pump. Filled the oil and put some coolant in it. Tried to start it yesterday, and the starter wouldnt turn the motor over. Tried a couple times and my warning buzzer went off. I used a jumper pack for the battery to make sure i had enough juice. I DO HAVE SPARK. Went underneath the car and the starter was hot, so i had it checked at Advance. it failed so i bought a new one. Put the new stater in today and it does the same damn thing as it did yesterday... Is there any part of the start-up procedure i'm missing? Do i need to fool the ecu or anything? Any connectors for emissions that should be left on or grounded? ..i havent hooked up the ABS yet Ideas?

07-30-2009, 04:31 PM	#2
To_Slow Rotary Fanatic Join Date: Feb 2008 Location: Shelby Twp MI. iTrader: (1) Posts: 315 Rep Power: 17	How hard is it to turn the motor over with a wrench??? If it takes allot of effort,,, you might have crushed something inside and locked it up a bit where your starter cannot make the additional effort to turn your motor over.. Good luck __________________ My link

07-30-2009, 06:06 PM	#3
vex RCC Loves Me Not You Join Date: Jul 2008 Location: Influx. iTrader: (6) Posts: 2,113 Rep Power: 19	Engine has nothing to do with ABS. While you were rebuilding it did you check the engine prior to installing it back into the car again? Make sure it turned freely? Ensure plenty of oil? Did you use a template for the port or did you eyeball it? Did you bevel the edges? (There's a slew of questions that go along with it--but I'll wait till those are answered before preceding along those lines) Does your starter sit flush like it should? Does the start attempt to turn but does not? Did you hook up the starter correctly? Did you pop any fuses while attempting to crank? Did you prime the oil system, did you assemble with 20w-50? Are your injectors firing? Are you ensuring voltage is able to reach the injectors? __________________ The Official FC Radiator Thread My Project Thread: Cerberus CCVT Virginia Rotary Group Last edited by vex; 07-30-2009 at 06:08 PM..

07-31-2009, 08:25 AM	#4
Mobius Rotorhead Join Date: May 2008 Location: Drumheller, Alberta iTrader: (1) Posts: 164 Rep Power: 17	The only times I have seen the starter not be able to turn a rotary over is when it had either seized the bearings onto the E-shaft do to lack of oil (on a running car) or when a small bolt had been dropped into a motor during a rebuild and had jammed in the stationary gear. Not saying those are the only options, but the starter has enough power to chug the car along when it's in gear, so if it can't turn the motor over there is something seriously wrong. __________________ \|\|\| Never argue with idiots. They will bring you down to their level and beat you with experience. \|\|\|

07-31-2009, 09:46 PM	#6
NoDOHC The quest for more torque Join Date: Sep 2008 Location: Sheboygan, Wisconsin iTrader: (1) Posts: 855 Rep Power: 17	I don't understand, the fuel system pressure is maintained by the fuel pump. The gas cap has little to nothing to do with it. If you want to check fuel pressure, tap a guage into the line. I really doubt that your fuel filter plugged itself while you were replacing the engine. Make sure that your AFM is installed properly and that your injectors have 12V to one side of them with the key on. Does your tachometer bounce or read RPM as you are cranking? __________________ 1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)

07-31-2009, 02:22 PM	#5
Justen In Too Deep Join Date: Jun 2009 Location: Clifton, NJ iTrader: (3) Posts: 112 Rep Power: 16	got it turning. Turns out the solenoid switch wire had a bad connection, wasnt getting enough power to it. Fixed, turns over strong now. Doesnt seem to be getting fuel now. took the plugs out, cranked it over a few more times to check for gas.. can't smell anything. i'm thinkin my fuel filter may be clogged to shit. Walbro pump seems to be working fine tho, turns on with the ignition like it should. Leaving the gas cap open should depressurize the system, correct?