Coil or Module on Power Logger?

[wmsonta]

I should stay out of this, but I just went though it with a friends motorcycle. He is a good mechanic but did not have enough age to understand 2 plug per coil waste spark.
ON A MOTORCYCLE these systems do not fire the plug to engine ground. The secondary coil circuit is not grounded. The 2 plugs will erode the electrode on one plug and the ground strap on the other. If either plug cannot complete the circuit, the coil will quickly fail.
2 plug waste spark is the oldest battery ignition system and only requires an even number of cylinders.
edit-only requires an even number of plugs, as in 2 per cylinder.

[Just a Six?]

The plugs are fresh from spring but I'll take a look at them. I tried to use my home made coil tester I paid good $$ for way back when & it only consistently sparks on the 1st pair of coils. The Allen head bolts connecting to the coils are adjustable length but I had no luck with that so I swapped a new coil & module & the tester did the same crap.
I went for a quick drive & car was ok & since it was bad both trips previous maybe I got lucky but I wouldn't bet on it.
As if I wasn't already going crazy enough my 160* stat decided it wasn't opening until about 220* on the way home so even tho it was fine on my drive just now the spare stat goes in next. Before the new rad went in I used a couple treatments of rad flush so maybe the stat didn't like that? Either way this car just keeps on giving this season. 

[Just a Six?]

Well I finally found my water issue, the heater core is pissing water under the car. I don't need heat so I'll loop the hoses for now unless it will cause any issues that I'm not aware of? I'm just not into replacing a heater core so it's going to have to wait for now.
 
I removed my new plugs & 4 are fouled black & 2 are really white. I'll see if I can post a pic when I have a bit of time later on.
I put in 6 new 42's gapped at 32 so lets see what happens? I'm not expecting it to improve, something is making this thing pig rich.
 

[Steve Wood]

Are you still running a POS Gen II Translator?

Also, have you taken your ohm meter and measured the resistance across the two spark plug terminals on each coil pack?

[earlbrown]

When you were running with 4 fouled plugs, the O2 was seeing additional unburnt oxygen so it adds fuel...

..which makes it worse, and it add more fuel..  etc..


On your two white plugs, do they look steam cleaned or solvent washed?  (AKA when you lick them, do they taste like gas?)

[Just a Six?]

Steve I'm using an AXIS unit. I have some pics but trying to load them Steve do you mind if I email them to you it will be faster.
When I turn them over the other side looks different on them?
Earl I'll let you be the judge they're pretty White on 1 side not as much turned over?

[Just a Six?]

Steve pics sent thanks!

[Scoobum]

Dave...have you got everything set on the default settings...and the switches set correctly for your chip.


https://www.turbotweaksupport.com/files/axis_interface.pdf

[Scoobum]

42's...are way to cold...and will missfire. They're made for over 25 PSI. Go to your friendly GM dealer and grab CR43TS. Been there done that with 42's.

[Steve Wood]

xxx


don't know why the pics are distorted.  They are okay on my end LOL


and they download in the correct perspective so I am going to blame Jeremy!!!!!

[Steve Wood]

Dave, did you check the resistance of each coil pack as I asked?

[Steve Wood]

wonder if the cam sensor is 180 degs out?

[Just a Six?]

Steve I won't be touching until tomorrow. The plugs are worse than normal because the car was pretty hot 220* when I shut it down & towed it home yesterday & it was started & shut off after 20-30 secs a few times. They are NGK UR5  When I did fire it up today for 30 secs it just smelled like Gas real strong. The coil & module are new off the shelf but I will check them. The engine hasn't been touched in 10 years so cam sensor should be right I ran it at BPG like this for 3 years.

[Steve Wood]

If all is correct (cam sensor, maf settings, coil resistances, I would say you got a bunch of screwy, dirty, partially stuck open injectors...or something else lol


First, I would find out why it got to 220

[Steve Wood]

David, if you have a Caspers Coil/module tester, set it on there and see if you get nice bright blue sparks all the way thru the rpm band as you turn the knob.  I would prefer to do it on a warmed up coil pack.

If you don't have a coil tester, but have a spare coil and module, swap that onto your engine.

If you don't have that, take the coil off the module and look at the potting compound in the module to see if it looks nice and smooth, or does it look melted.

I remembered that you said it ran a few seconds at a time when it got hot.  I don't know if it ran hot because the thermostat is stuck, the core is plugged up, the fans are not working, or the engine is only running on part of the cylinders part of the time