new s13 coupe and the ka is sloww

[s13kid989]

So i just picked up a s13 coupe its my first Nissan and Rwd car.

I have sworn by Vw my whole life. and owned a good amount of them.

when I picked up the car is was super clean, but the motor seems slower than the other ka's with the same mods (stock with a 2.5in cat back)

and my gas mileage sucks...

my check engine light pops on every now and then.

any idea on what it might be?

and yes i have searched

thanks for your help guys, this is an awesome fourm and i look fwd to posting on here a good bit.


Modified by s13kid989 at 12:45 PM 4/2/2009

[-RJ-]

there could be lots of things that could be the problem First how many miles and do a full tune up. Check for vacuum leaks, check your grounds etc.

[240RB1]

i have the same problem with my vert its annoying it feels like power comes on an off right?

[a_ahmed]

you know i can build some 8gauge grounding wires with eyelets.. but im not sure where what would go and how... it's not hard to make, just where to plug

And FYI, stock exhaust is more like 2.25" not 2.5"... i forget exactly but definetely not 2.5" and its crush bent (AND HEAVY...)

[s13kid989]

no the exhaust is after market.

and yeah the power does seem like it comes on and off...

its slowww when it is hot outside.. and once and a while when its cold it will pick up nice.

i have done a full tuneup also.

anymore help guys?

[Razi]

Change your fuel filter.

[-RJ-]

rebuilding the engine always does some good

[s13kid989]

the car low mileage car.. less than 100k

i purchased it from the original owner who was a female in her late 50s any sensors i should check?

[s13kid989]

any more help guys?

bump

[24DSXY1]

Put on a new coolant temp sensor. I saw a dyno before with a stock ka24de that made 110whp and when they put on a new coolant temp sensor it dyno'd 122-124whp.

[-RJ-]

use seafoam

[s13kid989]

what is seafoam?

and what does it do?

[JSDEVILDOG29]

Seafoam is a cleaner. Its originally made for marine engines. It is very potent. lol. Itll clean everything out. Get it at an auto parts store. Id run it first and then do a tune up. Be prepared for some smoke when its working though your system. I also pour some through my vac lines for an instant clean.

[cornuts]

were would u connet it to, booster vac line?

[cornuts]

would u connet to the booster vac line

[cornuts]

just sea foamed my 240... man it works great i feel like it just got a tune-up it a very good product now how many time would i have to use it every 6 months or so!!