Problems?

[SOL General]

Well im having some problems with my engine. I feel that its kind of sluggish, but not only that it studders when I push the gas or start the car..It feels like something is clogged.

I first thought it was the Gas, so I went to 3 other gas stations. Didnt help.

Fuel Filter....Changed

Air Filter...Changed

Oil and Oil Filter....Changed

Spark Plugs....Changed

I used gas treatment (Fuel Injector Cleaner and "Dry" Gas to remove moisture)

I don't have any other things that I could think of for my car. I just replaced the engine in my 91 no more than a year ago....

I use royal purple synthetic oil with premium gas (Its same price as regualar on wednesdays and sundays)

Any Suggestions?

[Tom @ Fast Forward]

Dan's car was like that. It was going dead lean. The BEGi AFPR was defunct. Find a way to check your AF.

[SOL General]

How would I be able to fix it?

[SOL General]

On the miata forums Im getting different suggestions like get plug wires, Check cat, Clean the Throttle body, Adjust the throttle cable,Check Timing (14 or higher).......

[Tom @ Fast Forward]

I suggest you don't buy anything until you know what the problem is. No need to waste money. A lot of dynos are like $45 for a couple runs. They can tell you what your AF looks like. If it looks good, they can do a compression check and leak down check. Otherwise, you are running blind and changing everything. I'll put my money on the AFPR if you have one. Your symptom sounds just like Dan's.

[SOL General]

My compression ratio was 175 170 160 170...how is that?

[Tom @ Fast Forward]

Awesome. Any idea what your AF is?

[SOL General]

No idea....its pretty good now....Studdering went away. I had extra spark plugs laying around so I threw them in there turns out that was the problem. For some reason all of my spark plugs looked fine? Im pretty confused on that part.

[Tom @ Fast Forward]

All it takes is one plug with a cracked ceramic and it is all over.