v8,really really bad miss PICTURE ADDED

[warmonger]

i know the coils are common to go,unplugging the fronts really did nothing for determing anything. i pulled the front plugs and the far right and far left were much more black than the rest...so i changed all 8 plugs. i also checked the resistance on them,and they were all around 0.8-1.0. i didnt bother w/the heating/cooling test b/c it runs like crap from the second you turn it on. i'm not even sure you can call it a misfire,it just feels/sounds like its running on 6 cyls at all time. any help would really be appriciated.
p.s. yes i put the coils from the back in the front and trying the unplug test and still nothing.....

 

[NebraskaSHO]

Drive the **** out of it.

Do that until the coil failes.

Or buy 8 new coils.

 

[JoesSHO]

I've never been a fan of the back-to-front thing, didn't see much point. For the effort involved, I'd grab a set of the coils off eBay and just put new ones on.

Does sound coil related though if you have good resistance.

 

[warmonger]

so your saying the resistance is good,but you still think it sounds coil related? no luck w/ebay. no coils listed.

 

[NebraskaSHO]

Long way to fix it is to buy 1 new coil and swap it around until you find the one that was about shot.

 

[warmonger]

yeah,was thining that,but i really feels/sounds like more than one coil. like it doesnt sound like a v8 at all and no power what so ever.

 

[JoesSHO]

Onlly asking for s***s and giggles- are your cams welded?

 

[warmonger]

yeah,cams were welded by nesho. okay,quick question. i put new plugs in yesterday for the drive home(170miles) pulled the front plugs today b/c thats were i suspect the miss is coming from. two of the plugs had a light coating of black soot and the white insulation part was still white,two of the other plugs had no soot and were kinda gas smelling and the white insulation was tinted kind of brown'ish. so should i assume those two are the weak coils?

 

[warmonger]

okay,update on the last post,i removed the rear plugs and all four are still clean,so the tally is:
6 clean plugs
2 plugs are slightly brownish and have a "wet" appearance although they're dry

 

[warmonger]

heres a picture of what i'm talking about,6 of hte plugs are white,2 look like they've never been fired but have a brown'ish tint to them

 

[hawkeye18]

Looks like you might have 2 bad COPs. I'm no expert on V8s but I think you're right in that there's no spark going to those two plugs, and I think the brown is from fuel soak...

 

[St Louis SHO]

Problem #1, it has Bosch spark plugs in it. Address that first.

 

[warmonger]

thanks for confirming my thoughts

 

[warmonger]

Problem #1, it has Bosch spark plugs in it. Address that first.

yeah,not my plug of choice. the guy i bought it from had them in the trunk so we put them in. i planned on putting in some motorcraft plugs when i get new coils

 

[St Louis SHO]

You wouldnt believe the driveablility problems we see with those plugs. I was hoping not to come across as a smart-ass there, and I apologize if I did.

We see numerous P0300's with those plugs, along with complaints of misfires felt. Everytime I see an OBDII car with them I tell the owner what to expect.....

 

[warmonger]

You wouldnt believe the driveablility problems we see with those plugs. I was hoping not to come across as a smart-ass there, and I apologize if I did.

We see numerous P0300's with those plugs, along with complaints of misfires felt. Everytime I see an OBDII car with them I tell the owner what to expect.....

nope,i know how you meant to come across. in my svt contour i had nothing but problems w/them. but i was 180 miles from home and no parts stores in sight,so i put them in. so do you rec. the autolite DP or stick w/motorcraft?

 

[St Louis SHO]

Autolites are fine, but if you have the extra bucks, stick the motorcrafts in it.

 

[warmonger]

well,even though i don't find removing the uim all that hard,i'd rather not have to keep pulling it to do plugs,i'll do it right the 1st time. thanks for your time and help.

 

[NebraskaSHO]

I drove with my Bosch plugs for 20k miles and they were great.

I've got copper plugs in with about 10k now and need to change them out and clean out the intake.

 

[St Louis SHO]

I drove with my Bosch plugs for 20k miles and they were great.

I've got copper plugs in with about 10k now and need to change them out and clean out the intake.

Bosch coppers or Bosch platinums? The platinums are a problem Some have mixed results, though most I've seen are negative.