1985 SE Fuel and Spark, no start (Page 4/4)
Gall757 FEB 11, 11:13 AM

quote
Originally posted by hmmhunter:

How would I check for leaky injectors?




Put a fuel pressure gauge on the fuel rail..(valve provided under that small metal cap)..crank the starter to get a reading...should be about 35 lbs.

Stop cranking and watch the gauge. It should hold pressure or drop very slowly for about 2 minutes. If the pressure drops quicker than that, your injector(s) are leaking.

[This message has been edited by Gall757 (edited 02-11-2022).]

phonedawgz FEB 12, 01:40 AM
Does it fire for the first crank or maybe second, but then doesn't again? That would indicate it's firing on the cold start injector.

Also your root problem is most likely all 6 injectors are stuck shut from sitting so long. Take the upper intake off and test each injector with a 9v battery and alligator clips. Stuck injectors make a different sound than a free injectors. Free the injectors by wacking them with the handle of your screwdriver.


IF YOU REMOVE THE INJECTORS YOU NEED TO VERIFY THERE IS NO FUEL LEAKING!!!!!!!!!!!! READ THE MANUAL ON HOW TO DO THIS. Or better is just not to remove the injectors. Just fix them by wacking them with the screwdriver while they are still in place.

[This message has been edited by phonedawgz (edited 02-12-2022).]

Skybax FEB 12, 02:57 PM

quote
Originally posted by Skybax:

Double check your firing order and distributor/cap position...





quote
Originally posted by hmmhunter:

I did check the order of all the plug wires, they seem to be in order.





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Originally posted by Rexgirl:

You may be back to basics. Like Skybax wrote, you might want to verify that the distributor and rotor are correctly timed.


[This message has been edited by Skybax (edited 02-12-2022).]

hmmhunter MAR 10, 07:42 PM
I had to leave town for a couple of weeks so I didn't have a lot of time to look into this until yesterday.

I checked the timing (as well as I could without it running) and it appears to be correct or at least close enough that it wouldn't be the culprit. I checked and replaced almost all of the vacuum tubes, and I found that the tube between the MAP Sensor and Fuel Pressure Regulator has a leak, but I've had a hard time replacing it. I bought the tubing but can't seem to find the right fittings anywhere. Any ideas on what to do about that?

I also checked the fuel pressure, and it was getting 46 psi but quickly dropping. It wasn't doing that before and I don't see any fuel leaking below the car. How would I check for leaky injectors and what do I do about them?

Thanks for the help!