Misfire was almost gone....Any new ideas? - PeachParts Mercedes-Benz Forum

ps2cho · #1 07-09-2008, 09:04 PM

So I took the car to a mechanic who replaced a bad hose on the intake manifold (I replaced them all so idk?)

and the car was running pretty good...but power was GONE. It was the slowest that I have ever felt it...

So I basically was trying to figure out why the hell all the power was gone by a simple hose being replaced.....then I realized that about 6months ago I gave a tweak to the EHA valve so see if lower chamber pressure was an issue, so I unplugged her, turned it back to the stock position and I got the power back

....but at the cost of the misfire. The misfire got worse back to where it was before.

Can this give any indication to anything??

I am taking the car to a shop with a leak detection smoke machine next week as I just found a shop that has one locally so I say with absolute certainty that I have no vacuum leaks left.

Larry Delor · #2 07-09-2008, 10:41 PM

Have you checked the ignition wire's resistances? Might have a bad tip.
Once you've pulled the boot off of the plug, unscrew the tip, and check resistance - 2k, I think is correct, but you ought to double check.

ps2cho · #3 07-10-2008, 02:24 AM

Quote:

Originally Posted by Larry Delor

Have you checked the ignition wire's resistances? Might have a bad tip.
Once you've pulled the boot off of the plug, unscrew the tip, and check resistance - 2k, I think is correct, but you ought to double check.

I plan to check them again just in case. I read this:

Quote:

Replace the wire if resistance exceeds specifications (about 50,000 ohms/foot)

Does that apply to my Benz too?