Bob Avellar
Member
- Joined
- May 25, 2001
Actually the only thing done to the motor was installation of new timing chain and gears. Intake manifold was taken off and that's about it. All the wiring was swapped into another Regal as a donor car so I may still have some electrical gremlins to eliminate but I don't know if that is the problem. Here is what I "think" I know.
1. I have spark to the plugs (actually only checked #1) on a spark tester. So I guess I have a crank signal and cam signal.
2. I have pulses to the injectors as I checked them with a test light.
3. I used the finger in 31 hole to determine the compression stroke and then continued to rotate the motor 1 7/16" past TDC to arrive at 25 degrees AFTD. The slot in the cam sensor faces aproximately toward the power steering pump when inserted into the cam gear and I aligned the plastic cap up to that same position so I should be fairly close to getting a cam pulse at that time. At least I should be within the window of timing to start the car.
4. As far as I know the grounds for firing things up should be clean and tight. I may have some other grounds inside the dash that need to be resolved but the ECM has ground- and like I stated I am getting spark and injector pulses.
5. Fuel pressure is there 45 ish.
6. All new plug wires and wired correctly to the apprpriate cylinders as shown on the coil pack.
7 Motor has not run in about a year but ran perfectly when taken out.
8. I think that we checked to see ithat the piston was at TDC and the timing mark on the balancer was at zero degrees so the cam timing seems to be OK.
Here's what is happening:
Car turns over but backfires through the intake and basically doesn't come close to starting. Just like ignition timing is off or spark plug wires are crossed.
Sometimes I can smell fuel on the plugs after cranking but they were not wet with fuel. I know the liftrs have probably bled down so I don't know if that might cause these symptoms.
The oill pump gears were packed with grease but during granking I did not build any pressure on the mechanical gauge. Before I attempt any more cranking I plan to use a drill to spin the oil pump gear to get some pressure built up.
I really am at a loss on this . My main impression is it is somehow related to ignition timing due to the backfire through the intake. My mechanic friend actually installed the timing chain/gears and he knows to align up the dots, etc and we can't see how that could be messed up. Steel gears were used and a stock chain was used.
Is there some way that we still have the cam sensor so far out of wack that it won't start? Everything seems to be set to the compression stroke (finger in hole) and position of cam window and cap seem correct.
I will be gone for most of the day but I hope you will post any and all suggestions to help me get my baby started again. I will probably try again on Sunday a.m.
BTW I have already done a search here related to cam sensor prblems but nothing seems to help.. Give me some ideas or other things that I can test.
1. I have spark to the plugs (actually only checked #1) on a spark tester. So I guess I have a crank signal and cam signal.
2. I have pulses to the injectors as I checked them with a test light.
3. I used the finger in 31 hole to determine the compression stroke and then continued to rotate the motor 1 7/16" past TDC to arrive at 25 degrees AFTD. The slot in the cam sensor faces aproximately toward the power steering pump when inserted into the cam gear and I aligned the plastic cap up to that same position so I should be fairly close to getting a cam pulse at that time. At least I should be within the window of timing to start the car.
4. As far as I know the grounds for firing things up should be clean and tight. I may have some other grounds inside the dash that need to be resolved but the ECM has ground- and like I stated I am getting spark and injector pulses.
5. Fuel pressure is there 45 ish.
6. All new plug wires and wired correctly to the apprpriate cylinders as shown on the coil pack.
7 Motor has not run in about a year but ran perfectly when taken out.
8. I think that we checked to see ithat the piston was at TDC and the timing mark on the balancer was at zero degrees so the cam timing seems to be OK.
Here's what is happening:
Car turns over but backfires through the intake and basically doesn't come close to starting. Just like ignition timing is off or spark plug wires are crossed.
Sometimes I can smell fuel on the plugs after cranking but they were not wet with fuel. I know the liftrs have probably bled down so I don't know if that might cause these symptoms.
The oill pump gears were packed with grease but during granking I did not build any pressure on the mechanical gauge. Before I attempt any more cranking I plan to use a drill to spin the oil pump gear to get some pressure built up.
I really am at a loss on this . My main impression is it is somehow related to ignition timing due to the backfire through the intake. My mechanic friend actually installed the timing chain/gears and he knows to align up the dots, etc and we can't see how that could be messed up. Steel gears were used and a stock chain was used.
Is there some way that we still have the cam sensor so far out of wack that it won't start? Everything seems to be set to the compression stroke (finger in hole) and position of cam window and cap seem correct.
I will be gone for most of the day but I hope you will post any and all suggestions to help me get my baby started again. I will probably try again on Sunday a.m.
BTW I have already done a search here related to cam sensor prblems but nothing seems to help.. Give me some ideas or other things that I can test.
