MSP lost its pep?

[jerseymods]

MSP runs great, but it seems to feel like its lost some of its pep. Could this be spark plugs? Car is 10yrs old, but only has 27.5k miles on it.

 

[njaremka]

how long have you had it? maybe you are just getting used to it?

 

[tweety2300]

I second getting used to it.

 

[jerseymods]

how long have you had it? maybe you are just getting used to it?

I have been driving it since June

But my dad has been driving it since the day he bought it. He agrees with me.

 

[hornsfan10609]

Try new NGK Plugs, ZFR6F is stock. Gap them to .028".

 

[jerseymods]

Try new NGK Plugs, ZFR6F is stock. Gap them to .028".

Thanks, will try this asap!

 

[Spiced MSP]

has the car ever been sea foamed? You could do that along with the new plugs as mentioned. Maybe a boost leak test to make sure the car is boosting like it should? Just throwing things out there.

 

[tweety2300]

It's 10 years old. It's about the life expectancy of plastic intercooler piping

 

[hornsfan10609]

Personally I don't recommend seafoam I have had 3 primary O2 sensors fail after using it (on 3 different cars). For $10 it's hard to get more bang for your buck than installing new plugs if they are needed.

 

[jerseymods]

It's 10 years old. It's about the life expectancy of plastic intercooler piping

I have checked the intercooler piping, all still seems to be in good condition. There might be some boost leak that Im not aware of, but first ill check the sparkplugs and then go from there.

 

[jerseymods]

Try new NGK Plugs, ZFR6F is stock. Gap them to .028".

Would these be the ones you suggested?

https://www.amazon.com (commissions earned)

 

[hornsfan10609]

The part number looks right but they certainly shouldn't cost $4, they are a little over $2 a piece at advance auto or autozone here in Texas. I say just go to the parts store and specifically ask for 4 NGK ZFR6F-11 plugs dont even tell them for what vehicle. You MUST gap them to .028" as they will come with a .044" gap so you will need a gapping tool/gauge.

 

[Wagonbacker9]

compression test?

 

[Bonks]

ac could be stuck on.

 

[Wagonbacker9]

ac could be stuck on.

Thats a difference of a couple HP, not anything earth shattering unless theres a major problem in the compressor or something.

 

[Bonks]

for me in a pretty stock msp my ac being stuck on felt like a decent loss in power, or like it 'lost its pep'

 

[2003.5_MSP]

for me in a pretty stock msp my ac being stuck on felt like a decent loss in power, or like it 'lost its pep'

This I notice the same thing with mine...

 

[tweety2300]

Try an na protege, I can't pull hills with ac on unless I downshift

 

[jerseymods]

So far I have changed spark plugs, but have not yet gapped them as I have should. Oil change done, and Valve gasket cover replaced.

 

[Wagonbacker9]

improper gap on a boosted motor is basically asking for it to run like crap.