TPI onto 86 Block

[VileZambonie]

Unplug an injector. To check for injector operation take your test light to ground and probe either terminal with the key on. One side should have B+. Now go to the other terminal with your test light to B+ and crank the engine. Observe the light and see if it blinks.

Check for spark directly out of the coil.

Verify fuel pressure. These are your 1st quick basic checks.

[123 pugsy]

Pugsy, I'm not one to butt right in, but I have to say. I have been reading you project and checkin out the pictures. That is one sweet rig ! Done really nice. Smooth and clean.
And the metal work youve done , wow!
Nice Job Man !

Thanks Jay. 

[123 pugsy]

Unplug an injector. To check for injector operation take your test light to ground and probe either terminal with the key on. One side should have B+. Now go to the other terminal with your test light to B+ and crank the engine. Observe the light and see if it blinks.

Check for spark directly out of the coil.

Verify fuel pressure. These are your 1st quick basic checks.

Thanks Vile.

Will do.

[123 pugsy]

Unplug an injector. To check for injector operation take your test light to ground and probe either terminal with the key on. One side should have B+.

UH-OH!    2 sides have BATT+   

[VileZambonie]

You are checking with the injector wire unplugged correct?

[123 pugsy]

Oh Yeah. Unplugged with key in run. Power to both sides.

[VileZambonie]

I just looked at a schematic. They are banked injectors. Install the test light in series in the unplugged injector wire and crank it. See if the light blinks.

[123 pugsy]

Had the wife turn the key as I held the test light in series and it flashed .
Wa-Hoo.......it also kicked a bit.
Hooked up the injector, played with the distributor and she started up!
Double Wa-Hoo!
Running really rough so I'm sure I have some adjustments to make but I'm outta time for tonight.

Thanks, Vile.

I'm sure I'll have a bunch more questions later on this weekend.

[123 pugsy]

First problem: My service engine  light doesn't work. I have 4.96 volts on B of the ALDL. I used a jumper from A to B and turned the key to run and no code 12.

Second problem: 5.7 liter TPI. Anyone know what the timing should be? I know I'm supposed to disconnect some bypass thingy which I did and set it to 4* ATDC. I reconnected and the timing was the same??

[123 pugsy]

Checked continuity on the SES light wire and its good right to the computer.

 

Edit:  Found out that the ECM grounds the light not powers it as I thought. I just have to hook up BAT+ to the light and hook up the ground to the ECM.

Just the timing thing still.................................

[VileZambonie]

You should never have a spec on a gm engine ATDC. The SES bulb should be key on B+ the ECM grounds the light for the bulb check. once it starts the ECM will remove the ground if no hard codes are set and it should go out. Here's the timing spec. The EST Bypass is a single wire connector taped to the harness on the pass side near the rear of the engine. It's tan and black.


The ignition timing marks are located on the engine front cover. A saw slot on the balancer indicates No. 1 piston position.

PROCEDURE:


With the engine running at normal operating temperature, turn OFF all accessories and disconnect the EST By-Pass connector located at the harness near the firewall.
An ECM code will be set when the EST By-Pass connector is disconnected.
Use a timing light and tachometer to set the timing at the specified RPM by loosening the distributor clamp bolt and rotating the distributor until the specified timing is obtained.
^ Base Timing 6°BTDC at 600 RPM

Tighten the distributor clamp bolt and recheck the timing to make sure the distributor was not moved when the clamp was tightened.
Turn the engine "OFF" and connect the EST By-Pass connector.
Clear the ECM Code by disconnecting the negative battery cable for at least 30 seconds.
 
 

[123 pugsy]

You should never have a spec on a gm engine ATDC.

Whoops. That should have been BTDC.

Thanks.

I'll set to 6* as per your instructions.

[Bitzer!]

and......... brum brum?  Its like waiting outside maternity for news on a baby!

Man I've been reading this topic and keepin up to speed [i think!]

Will be starting the Bitzer project soon but mega impressed with how you've done.

top stuff   

[123 pugsy]

Thanks alot Bitzer. 
I got the timing set along with some new spark plugs and wires. Feels pretty smooth now but I didn't test drive it yet. I gotta make a bracket to move the throttle cable back about an inch.

So stay tuned Dad and we'll see how this baby goes tommorow I hope.

[123 pugsy]

Made up the throttle cable bracket relocator , just hope its not too tight
( pulling on the throttle).

Just gotta go for a test drive.