So I decided to give the sedan the seafoam treatment and a general tune up this morning to give her another shot at passing inspection this morning. I ran to VatoZone and picked up the stuff I needed, everything ran fine.

I got home and left the motor running. Measured out 5oz. of Seafoam and added it to the brake booster hose slowly. Finished that and turned her off. I proceeded to replace the fuel filter, rotor and plug wires. While I had the MSD cap off, I took some sandpaper to the contacts for the rotor to each wire and cleaned em up. Figured I'd change the plugs after I ran the seafoam out of the cylinders.

Finish it all up in about 40 minutes to let the seafoam set in, tighten everything back down, and jump in to start it. She starts up but very roughly, figured it was just the seafoam. I backed out and proceeded down the drive but she had absolutely no power. Drove for a minute and figured something was wrong so I pull over and pop the hood.

Start pulling wires to see which is the problem cylinder... #2 and #3. Changed the plugs right there. No help. Getting good spark from the wires as well. Get it to Autozone to use their compression tester, 190 across all 4 cylinders Bring it back home and start digging further. -13.**V (multimeter set at 20V) at the injector plugs. Tried moving injectors around, no help.

What could be going on here? Fuel+Compression+Spark=Operating Cylinder, right?!?!?

 

how far did you drive it? It will run a little rough until the majority of the sea foam is out of the motor. I had to do some pretty aggressive driving for a few miles to clear all of it out. Did you have the usual big clouds of white smoke after the sea foam treatment and has it cleared? Also I don't know if it matters but the directions say to only let it sit for 5 minutes before doing the aggressive driving.

 

Check the plug wires?

 

I have used that exact image countless times but thanks.

So turns out it was the rotor. Don't know if it was a bad or an incorrect rotor but I put the old one back in and she ran great. With the MSD setup, do I have to order my rotor's directly from them?

As for the seafoam treatment along with other parts, she's running awesome now. The white smoke cleared and she's floating.

 

Any parts store rotor will work.

 

lol i LOVE putting sea foam through the brake master cylinder line, its soo funny

 

does that stuff make a difference?

 

it cleans all of the carbon build up out of your head, so yeah i'd say it makes a difference.

 

Seafoam is great. Not so great on older beat up engines that rely on that carbon build up to keep things sealed.

Always make sure to run in until all the smoke clears

 

She's been running great since this morning. Idle is a lot smoother and throttle response seems alot more fluid. Don't know if it's possible, but it also seemed to quiet the noisy LMA

 

you might want to do a valve adjustment

 

+1, It probably wont fix your problem but depending upon the buildup in your head it will probbaly help.

Honestly I would look back at your plugs. You probably just plugged the new set. If there was remotely a little bit of seafom still in the engine I have seen it happen. Same thing happened to my buddy's DA. I told him he should run it and it would barely move under its own power after it was added. Changed plugs and still got a misfire but ran 100X better. After Looking for what seemed like hours a new set of plugs fixed it. When we pulled the new ones out they had a very light film on them is all that I could call it. Definitely Weird but GL with everything.

 

Why don't people read the entire thread before they post?

 

because that would be the smart thing to do