Re: Intermittent no start condition
 

Ok, so basically the MSD is sending a tach signal to your EFI which it needs to indicate that in fact the engine is running. So you're still back to the basics, which can be indicated by a blinking LED, no blink, no start. I prefer the noid lights with a short pigtail on them so I can position it for easy viewing while cranking, if you have a helper this is a non issue. Look at your injector connector and get a light with similar terminals, as they've made a few different types over the years, there are some "universal" ones to chose from.Joe

Re: Intermittent no start condition
 

I have an MSD ignition tester and I just used it last Saturday.

It allows you to fire the ignition without running the engine.

It's a very handy item....but cost about $150 bucks I think

It can test the box, coil, chips and other items like a tach that is very often not accurate.......

Re: Intermittent no start condition
 

YEP everyone running an MSD should have one of these. Mine is out of the toolbox nearly every race.

Re: Intermittent no start condition
 

Here's the latest:
Tried to start car....no start
Checked rocker switch to make sure it was working...OK
Checked power to MSD box...OK
tried to start car...fired right up.....3 times....then returned to no start condition
LED working on MSD w/power on
Used spark tester to check coil output....OK
Disconnected crank trigger lead and , with ignition, shorted out green to purple wire which caused spark tester on coil to flash as the short was applied intermittently. This test was done per MSD direction. The only question I have here is that the spark was very weak from this test. Not sure of the correct level of intensity, but will call MSD again tomorrow.
None of the local auto parts stores had a noid light....Harbor Freight has a kit for $35, but I'll try to locate an individual tomorrow. The injector is a Bosch 80150756 with two flat blade terminals.

I hope to test the injectors tomorrow.
I appreciate all of your ideas and help. We WILL figure this out!!!

Re: Intermittent no start condition
 

Correction: injector P/N is 280150756....Bosch30#

Re: Intermittent no start condition
 

John,
Give me a call tomorrow later in the day. We had this at one time too. I will walk you through the tests. Call after 4. I have a charity golf outing.

Rich

Re: Intermittent no start condition
 

Will do.
Thanks

Re: Intermittent no start condition
 

Get a noid from any NAPA, or Snap On, Matco, etc.

Re: Intermittent no start condition
 

When the engine is in a no start condition...you need to just quickly see if the coil is firing as the engine cranks......

Get another coil wire with an old spark plug attached to one end......have it right under the hood ready to install on the coil and try to ground the plug on the engine.

Once it is in that no start condition install that wire with the spark plug on it into the coil and crank it.......if it has spark......quickly reinstall your normal coil wire and crank it....If spark was always there.....and it does not start.....and fuel pressure is good on your gauge.....45-50lbs......

Well it narrows it down to the ECU and fuel injectors.

There should be a tach signal from the MSD box to the ECU if I recall right. There is a single wire connection from the MSD to the ECU that has to be there and polarity correct.......That was the one I had trouble with.

Wire connections or a ground issue sound like what might be your problem......

I would go over all of that. The wiring diagram for the Accel ECU's was not hard to find and if I could recall the exact connections I would tell you but it's been a while....

It was all available at Accels DFI website.....

Re: Intermittent no start condition
 

Rich, I did test the coil immediately after experiencing the no-start condition. I placed the spark tester between the coil and the coil wire. Spark was there. I did not, however, test it on the other side of the coil wire (your process). I will do that tomorrow. That would eliminate or validate a bad coil wire. I will go through all the wiring this weekend....after I do the noid test.
I will find a noid between now and the weekend.
Thanks.