Ferrariferg

iTrader: (3)

I pulled the plugs and they were soaked. Not surprising since I've been trying to start it all day. I cleaned them up again and had my dad watch for spark as I turned it over. There was a strong spark on the trailing plugs but almost no spark on the leading plugs. I switched out the leading coil for a new fireball coil my dad has for his 260z and still had almost no spark. I'm thinking that maybe the ignitor is going out. Is there a way to test it?

Keeble

iTrader: (3)

you can just swap the trailing over to the leading and see if she starts

Kentetsu

^^^ This ^^^

If the spark is still weak after you swap the ignitors around, then verify the condition of the cap/rotor and plug wires.

Ferrariferg

iTrader: (3)

Alright. So I tested everything for the ignition. Got good spark on leading and trailing now. New coils and NGK plug wires were put in. She still tries but just cant do it. I cant find the compression tester so I did a ghetto test and got 3 poofs from both housings. We think it might not be getting enough gas or not enough fuel pressure. My dad squirted gas down the carb and she almost started. Could the pump be supplying fuel but just not enough pressure? The bowls are always at the proper level so I know the pump is supplying fuel. I'm about to make a run to O'reilies and pick up one of the cheapo fuel pressure gauges and an inline fuel filter to put before the carb so I dont have to leave the gauge in and I have some extra protection from crud. I'm also gonna check the new fuel filter. Maybe some crud in the tank broke loose and now the filter is clogged.

Thanks again everyone for your help. I really appreciate it.

Ferrariferg

iTrader: (3)

Pressure gauge was reading between 1 and 2 psi. Thats pretty low isn't it? What should it be at?

Kentetsu

Cheap gauges are not accurate at these low pressures. Return it if you can.

Ferrariferg

iTrader: (3)

I ended up having to buy a better gauge. O'Reilies doesnt stock the cheap ones anymore. Probably a good thing. I picked up a Mr. Gasket 12s fuel pump. Its supposed to work 4-7 psi which is where I was told it should be. Got it hooked up and hooked the gauge up and it jumped to 9 and held steady. I guess I'll need a regulator. Too bad every auto parts store in my area is sold out. WTF!?

I forgot to mention that I tested the old pump after I made the last post and it was holding at 1 psi.

Kentetsu

I should have been more clear in my earlier statement. Almost no gauge will be accurate at the pressures we are working with. There are many articles/threads covering this, so I won't go into detail.

The only gauge that I'm aware of that is accurate at readings that low on the scale is the one carried by www.re-speed.com If I recall correctly, it runs about 50 bucks, but mine has served me well for a couple of years now.

Do not attempt to use any other gauge to tune your fuel system, as it will only be misleading and make the job that much harder. You would be better off tuning it by ear/smell/performance.

Sorry I was not more specific in my earlier post, but I was in a hurry. Good luck.

rotordogg

iTrader: (4)

Any updates on the progress of your car?

Ferrariferg

iTrader: (3)

I've replaced just about everything I can think of. I even drained the gas. I was told that some of the gas I had used might have been bad. Put a couple gallons of good gas in it and after fighting with it some more and some more adjusting of the carb and I got it to start. I readjusted the idle and mixture screws and had it running perfect for about 10 minutes. I shut it off and turned it back on a couple times to make sure it would start up again. I fluttered the throttle and had no problems. I fluttered the choke and it sputtered and wouldnt return to idle and died. I couldnt get it to start back up. I'm at a complete loss.

Kentetsu

Pull the cover off of the carb, and see if the choke is actually disengaging. Sounds like it might be getting stuck in the closed postition...

Ferrariferg

iTrader: (3)

I had the cover off. Choke works fine. I wish I could figure this out. I would hate to have to sell this car after trying to get it for so long.

84 GSL

iTrader: (3)

Have you checked for vacuum leaks since you removed the rats nest? I know that they cause very frustrating problems by experience.

Anyway, good luck with her.
Thanks, Wyatt

RustyRacer

Guys, could it even be a leaking brake booster (or check valve) causing a vacuum leak? It did die when he applied the brakes, but I'm not sure if it was because he removed his foot from the gas.

Ferrariferg

iTrader: (3)

I did some more work on it the other day. I got it to start for about 30 seconds before it died and then nothing. I did another "ghetto compression test" and didnt get much of a puff from any of the rotors. I also had smoke coming from the carb. I'm thinking the apex seals might have gone out. I also removed the lines for the MOP from the carb and they were pretty much dry. I'm thinking that the MOP might have gone bad and wasnt pumping any oil at all.

Kentetsu

You've probably lost compression due to flooding. Dump some Seafoam down the carb and try again.

Smoke coming out of the carb would also support that theory.

Have you checked the timing? I would make that a priority if not...

Ferrariferg

iTrader: (3)

Ive heard that before and someone recommended putting a squirt of oil down the carb and I did notice a difference. Ive also removed the fuel pump fuse while cranking and it still only makes a slight difference. I've checked and rechecked the timing. As far as I can tell its perfect or 180 off. Ive also switched the coil wires and it didn't make a difference. Spark has been checked several times and the plugs have been cleaned several times. The other day when I got it to run for a bit I didn't have to do anything. I just got curious and turned it over and it fired up after about 10 seconds of cranking. I'm not sure how many miles you can typically get out of a rotary but i was told that mine is fairly high mileage at 173,000. At this point I'm starting to consider looking for a good motor as I don't have the money to rebuild the current one, as much as I wish I could.