How long should it take to check one?

 

I know this is not answering the question, but once you R&I one plug you are 20 minutes away from having replaced all 3 on that side. If there is a question, just replace them....

 

Yeah, not 1 is that easy... Getting to one is just as easy as getting to all 3 on that side and might as well do the other since it is 1/2 way there as well!

 

Why would you only check one plug at random???

 

I've heard of people being able to get to the plugs without taking everything apart but after doing a plug change myself for the first time a couple weekends ago, I don't know how it's possible to get to any of them without removing bumper, intercoolers, and heat shields. Maybe if you've done plug changes many times, have some custom tools, and an ability to pull the plugs and coils without being able to see any of it, then you might be able to. If you can't do that (which I suspct most can't), then any 1 plug is as easy as another and if you are going that far anyway, just change all the plugs.

 

isn't it possible to do it while putting the car up on a lift without dismantling the rear end?

 

it home from the shop, I was told it was running very rich, when cold and there may be the possibility of a fouled plug, I just had them all replaced with the install and didnt want to do it again unless needed. Going to EPL for custom dyno tune in 2 weeks so I want the freshest plugs possible...??

 

So 20, 30 miles on the new plugs?

 

cold start up until it kicks the idle down from 1100rpm to 800rpm.

 

My exhaust pops alot on cold start also, BBI and Vision Motorsports said it was normal with an open catless exhaust. After about 30-40 seconds, it stops, and is perfectly smooth/quiet. Did you change your exhaust at the same time you did this other work ?

 

The first time I replaced the coils and plugs it took me 3 hours. Second time - 30 minutes. It doesn't take that long to remove everything once you know what you are doing. I do suggest you take your time on your first try.

 

If your're going in just replace them all. It's inexpensive insurance.

 

I'd be surprised if they could foul in only 35 miles. What does your tuner say?