MSD coil no workie

[Don W.]

Decided to install an MSD Blaster coil today, part # 8226, direct replacement for the stocker. Started and ran fine in the garage. One test drive later, pssfft! misses real bad at anything above part throttle, forget about boost.

What gives? Right now I'm back on the stock coil and it runs like it did before which was OK except; see below.

The reason, in case you're wondering, is that I'm dealing with considerable miss at high RPM WOT with my alky setup. Ultimate set to T1-22 for now. Thinking I was getting coil breakdown under high load I changed the coil. Actually in touch with Nolan on the alky issue, might change the chip ect, so this post is about the coil only but comments welcome.

Also FYI: wires are new Taylor's, cap/rotor new NAPA (which I haven't looked at yet, sorry), and NGK UR5 plugs less than a year old gaped to .028.

Thoughts??

TIA

 

[SY2932]

Re: MSD coil no workie

This is how you can check to see if a coil is good or bad. Coil is a brand new spare MSD #8226 that I had sitting on the shelf in my basement:

"This is a brand new MDS coil #8226. The coil does NOT have to be removed from the vehicle to perform these checks. Any connections on the terminals will have to be done with a paperclip or other small object as the test leads won't be able to reach the pins inside. This value should be infinite resistance (open). If not, replace the coil"

"From here on out, the resistive values are not "carved in stone" and are approximate. Here, the value should be very low or zero. If not, replace the coil."

"Here, the resistance should be high but, not infinity (open). If not, replace the coil. *These checks will work on a stock coil as well*."

The NAPA *could* be part of the equation as I personally don't know of anyone who has used one. I tried to run the exact MSD coil in my truck last year and had issues as well with misfires occuring at WOT. I had always heard that the stock coil was the best one to use so I got a brand new stock coil and haven't had a problem since (apparently, sometimes the general gets things right ). The MSD coil ended up in my daily driven S10 and has never given me any problems.

I see that you are using taylor wires and there used to be a relatively unknown problem with running them. The problem centered around the boot being slightly longer than a normal boot on the distributor cap side of the wires. You would press them down on the distributor cap and they would "snap" but the boot would be compressed in the process. Over time, it would push itself off the terminal causing a loose connection. I have always ran Taylors and never experienced the problem personally. Nevertheless, I trim a little of the boot of my wires when I install them just for good measure.

 

[QUICK STORM]

Re: MSD coil no workie

that sucks, maybe its time to upgrade to a MSD 6 box

 

[Captain Morgan]

Re: MSD coil no workie

hummmm weird, Ive run at same coil in my truck for almost 6 years now and no problems

 

[wantingasy]

Re: MSD coil no workie

I have that coil also and everything is fine. I'm also putting the msd box in this summer too.

 

[Don W.]

Re: MSD coil no workie

Thanks for the input, especially Mike. Will test tomorrow. Went to the Summit series at Infineon today (trophy only since I'd never done that before) Best ET 13.085, best 60' 1.825, best trap 103.09. The trap is 3 faster than I've ever done. The others, well just say I and the truck could do better. Even with alky I'm still getting, what I think is, a lot of knock/retard.

BTW The trap improved when I did two things; TC lockup and shifting to OD at about 1000'.

I'll put up a Datamaster here later and maybe I can get some feed back.

Thanks again,

 

[Don W.]

Re: MSD coil no workie

Took awhile but Interesting...

First picture: Reading should be -0- I have something like 20 with numbers changing.

Second: Reading SB 4.1 (or so) I have 0.5

Third: Reading SB 5.4 (or so) I have 5.8. The only one that's close.

I've emailed MSD will keep you posted.

 

[DaKine]

Re: MSD coil no workie

Check plug wires .. if there is a break in any one of them there will be grounding. Had that problem when my truck was running. Feels like boost wants to come on and then it starts sputtering and acting all stupid. Too bad my Sy dont run at all .. wont start. Hope this helps.

 

[Don W.]

Re: MSD coil no workie

Check plug wires .. if there is a break in any one of them there will be grounding. Had that problem when my truck was running. Feels like boost wants to come on and then it starts sputtering and acting all stupid. Too bad my Sy dont run at all .. wont start. Hope this helps.

I haven't actually checked the wires but they are new (Taylors) as of 4 months ago. Trouble is it runs fine on the stock coil up to about 100 with some meth on so I don't think it's the wires. I've contacted MDS and they had me run a ground wire direct from the coil bracket to the bat. Doubt that will help but I'm trying that today actually.

Thanks for the post. When I get it figured out I'll post here.

 

[Six-is-Enough]

Re: MSD coil no workie

Even with alky I'm still getting, what I think is, a lot of knock/retard.

BTW The trap improved when I did two things; TC lockup and shifting to OD at about 1000'.

I'll put up a Datamaster here later and maybe I can get some feed back.

Thanks again,

When I first put alky on my truck I had a similar problem on lower timing settings. Went to a more aggresive setting ie:similar to t3-24 and the knock went away. I think it might be getting the truck to rich with the alky, particularly if injection is not progressive, thus needing more timing to lean back out. BE VERY CAREFUL TRYING THIS THOUGH!!!! If this is not the problem the knock could get worse. Be easy with right foot and quick to lift.:2cents:

Also if the truck is breaking up at higher boost levels you will need to tighten spark plug gap to .028-.030 range. It seems to be a common problem with alky injection.

BTW your truck will get the best times letting it shift itself. Just put gear selector in OD and leave it. It should shift at around the 1/8 mile. They don't like to rev a whole lot. Power drops off severly at about 4600 rpms. The more boost you run the lower your power curve is shifted. Keep that TC locked that is easy et and mph.:tup: Good luck to ya.

 

[JAY]

Re: MSD coil no workie

hummmm weird, Ive run at same coil in my truck for almost 6 years now and no problems

I have this one also and have had it a year with no problems. Bad coil?? I'd take it back and get a new one.

 

[Don W.]

Re: MSD coil no workie

Actually talking to MSD, awaiting the next step. Meantime working on the miss via FP. Truck was running lean. Gonna have to bite the bullet and get a Walbro one tax season is over.

 

[ed hess]

Re: MSD coil no workie

i just had an odd problem with an msd coil.

turned out to be the connector inside the coil needed a little tensioning.

check tension with a spade connecteor and see if all 4 terminals give a little drag when removing spade terminal.

ed

 

[Don W.]

Re: MSD coil no workie

MSD agrees with another poster who wants me to power brake (at night) to where the miss occurs and see if I can see any spark leakage. Sounds spooky to be in front watching while someone else power brakes. Meantime I'll double check your suggestion.

Here's the link to the MSD forum site. Look for 8226 coil not working.

http://www.msdignition.com/forum/forumdisplay.php?f=5

 

[ed hess]

Re: MSD coil no workie

tighten ebrake and do it reverse.

ed

 

[SY2932]

Re: MSD coil no workie

tighten ebrake and do it reverse.

ed

Or stand off to the sides, NOT in front.

 

[Don W.]

Re: MSD coil no workie

Well I tried the "power brake it till it misses test" in the dark and could see no visible sparks anywhere. I'll let you know what MSD has me do next.:roll: I suspect it will be Monday before I get an answer.

 

[mrweelr]

Re: MSD coil no workie

Don - I run that same coil with the Taylors from RPM. No misses, no problem. I'd return it for another one just to be sure it's not DOA. It's been 3000 miles since I got her back on the road and haven't had ANY ignition problems at all.

 

[Don W.]

Re: MSD coil no workie

Don - I run that same coil with the Taylors from RPM. No misses, no problem. I'd return it for another one just to be sure it's not DOA. It's been 3000 miles since I got her back on the road and haven't had ANY ignition problems at all.

I agree. Since I'm already talking to MSD I'm gonna wait for their response (hopefully Mon.) and go from there. I'll keep ya posted.

 

[mrweelr]

Re: MSD coil no workie

Hey, I'm planning on coming up to Infineon Wednesday night. Are we expecting rain? You gonna be there? My tranny is shifting into 4th now at WOT so I'm hoping for 12s this time.