Now what?

[Blk Mamba]

under mild acceleration, from coasting, it bucks. I first noticed it about two weeks ago, and thought it was bad gas, but now it's a little more intense. I did the seafoam treatment, a couple months ago, so is it dirty injectors, or plugs? Stock, with 84,xxx miles.

[Marauderjack]

Mine did that and it drove me crazy...tried a lot of stuff but finallt new plugs and Granatelli solid coil to plug connectors did the trick!!:bows::beer:

Many....many.....many miles later it is still fine!!:D

Try plugs first and if that doesn't do it get the connectors.....my $.02!!:beer:

[Pat]

Bodyman and I have both experienced very similar symptoms.

Turned out, after much troubleshooting, to be the COPS. (coil on plug). You can buy one and substitute one at a time, noticing if there is an improvement until the problem is fixed or you have identified all the bad COPS (may be more than one).

In Bodyman's case it was one, in my case it was at least three. I have 80K on my MM so I elected to change them all.

My mech bought a cheap COP for troubleshooting. I still have it if you want to use it. You can keep it for the next guy. A traveling COP (so to speak).

You can get OEM for about $50.00 each or an aftermarket brand, such as Borg Warner, for about $40.00. There are those made in China but my mech said to avoid them.

Let us know how it goes.

BTW, I spent a ton of money based on dealer troubleshooting on fuel system components to no avail.

Regards,

[ntd]

I would go with a cop see it all the time at 85k might as well do plugs too use anti-seize and torque to spec 11 ft/lb.

[Blackened300a]

I had a bucking problem in my CV and it was a bad coil. I had a rough idle in MM and it turned out to be a loose plug. Start looking at the plugs first. This engine likes to loosen them up for some reason.

[Blk Mamba]

Thanks to all, seems like the COP's, I'm doing plugs anyway, so this should cure the problem.