Time for a Tune-up

[kluke15]

Fair enough. Cross it off the list, then.

for what its worth i just hit about 41K on mine and my plugs look tired. i will be swapping mine out this week. im just NA tuned with headers.

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[Rocketeer]

What others said, plus if you are in doubt about your fuel system, just drive around and log the fuel rail and commanded pressures through OBDII logging. If it's around 50psi your ok. If it's sluggish off the line - a less easy thing to consider doing is checking injectors and vvti chains for excessive slack.

 

[nnnnnn]

Imo replacing the coil packs at 50k is pretty wasteful. I'd go at least 80k on them before I'd even consider that. NA cars are typically nicer to their ignition systems than boosted ones. Your plugs are also probably fine, but there's nothing wrong with tossing in some new ones for peace of mind.

Belts are also one of those things where a visual inspection is warranted. If there's no noises or anything, the tensioner is also probably fine. I suppose of the car has lived a hard life with lots of high RPM you could be justified in slapping a new one on, but typically those live to at least 100k.

I'd check your water pump while the belts are off for any rough spots in the bearing, or any coolant residue near the weephole. They're known to kinda suck.

One of my coil packs and several plugs went out at 80k when I was NA about 2 months ago on my GT. My advise is when you hit 65k swap them all out. Just not worth the risk. I've been dealing with random misfires ever since. But it was confirmed that several plugs and one ignition coil died.

 

[DonnieO]

Plugs are good for about 30k.

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