stock ka-t running pig pig rich

91_ka24de · Post by **91_ka24de** » Wed Jan 05, 2011 7:31 pm

Stock ka oem built stock inj fuel pump adj fuel pressure regulator at like 31psi running. And fouling the plugs in seconds. Any idea? Wideband saying 10.0 when revving jumps to 11-12. Revs freely. Havnt drove it. And I'm not sure what the psi is spoused to be at while running with vaccume.

tom550 · Post by **tom550** » Wed Jan 05, 2011 10:55 pm

do you have a walbro? did you just install it?

when i first put my walbro in it ran crazy rich for some reason. i put my stock one back in. then a month later when i was boosted and needed it i put it back in and it ran fine. idk what the deal with that was but. it works now.

91_ka24de · Post by **91_ka24de** » Thu Jan 06, 2011 12:57 am

Stock fuel pump. So I don't have the iacv so I have to crack the throttle body. Now I'm thinking that when the tbs cracked the tps is sending to much fuel at idel

street_240sx · Post by **street_240sx** » Thu Jan 06, 2011 5:01 am

when you remove the iacv and adjust the throttle to stay out, you have to adjust the tps

91_ka24de · Post by **91_ka24de** » Thu Jan 06, 2011 1:36 pm

how do i do that exactly? and we have the fuel psi at 25 right now.

street_240sx · Post by **street_240sx** » Thu Jan 06, 2011 4:35 pm

turn the psi back up and try this first http://www.nicoclub.com/archives/ka24de ... -idle.html

Jordan Gladman · Post by **Jordan Gladman** » Thu Jan 06, 2011 5:05 pm

What else did you change? Even with the TPS messed and a bad IAV your AF's should be fine.

Check your MAF.

91_ka24de · Post by **91_ka24de** » Fri Jan 07, 2011 11:23 am

So when the cars running I can pull the tps clip and it doesn't affect the motor what so ever. Revs the same as pluged in no stumble or anything. Thinking the tps is bad. And I can't get the right resistance reading while trouble shooting the tps. And I noticed when I unplugg the maf clip while running it will run the samme but won't leme rev past 3grand. Isn't the engine susposed the die after I pull the clip to the maf?

Jmcc · Post by **Jmcc** » Fri Jan 07, 2011 2:19 pm

what ecu are you running stock right?? if so what o2 are you using for the ecu??

street_240sx · Post by **street_240sx** » Fri Jan 07, 2011 6:08 pm

no ka's have a built in "safety features that you can run the car below 3k without much issues

91_ka24de · Post by **91_ka24de** » Tue Jan 11, 2011 4:41 pm

stock ecu. stock new 02 sensor. my boost guage is reading 11 vac. im pretty sure most boosted cars shouhld be at 21 20 19 vaccume at idel. meaning if im at 11 i have a vac leak. that could explain my ungodly running rich problem maybe?

OnTheChip · Post by **OnTheChip** » Tue Jan 11, 2011 4:52 pm

Did you check the ECU for codes? Could be a CLT problem.

Dave

91_ka24de · Post by **91_ka24de** » Tue Jan 11, 2011 5:14 pm

clt? and no i havn't checked it for codes yet. i was showing code 12 which is maf but i replaced it with a buddys and havn't checked it since. i will tonight.

91_ka24de · Post by **91_ka24de** » Tue Jan 11, 2011 8:36 pm

Ok compression is 165 165 150 120

91_ka24de · Post by **91_ka24de** » Tue Jan 11, 2011 8:39 pm

Ok compression is 165 165 150 120.. I built this oem motor. First timer. So don't gimmie to much ****.. what do u guys think? I did not gap this rings accordingly. Vaccume is 11 vac at idel. Runs choppy now. Havnt really run the car to set the rings.... SOS....

91_ka24de · Post by **91_ka24de** » Wed Jan 12, 2011 2:37 pm

Going to do a leakdown test and see what's goin on. But should I pull the motor n redo the rings?

Jmcc · Post by **Jmcc** » Wed Jan 12, 2011 2:53 pm

do a leak down test. then put some oil on the cylinder to try a wet test to see if your numbers go up. to try and get a better idea of a ring problem or a head problem.

91_ka24de · Post by **91_ka24de** » Wed Jan 12, 2011 3:44 pm

Wet test? Just the same ad a leak down but put oil in?

Jmcc · Post by **Jmcc** » Wed Jan 12, 2011 3:54 pm

yes wet test. what it will do is seal up the rings for a little bit till it blows by.

but if the numbers go up when you do a wet test. that lets you know its rings. and when you do it dry it could be the rings or in the head.

marko76 · Post by **marko76** » Wed Jan 12, 2011 4:35 pm

It also wouldn't hurt to look around on some of these forums and try to find a download of the FSM... It REALLY helps to be able to look it up in there!!

91_ka24de · Post by **91_ka24de** » Thu Jan 13, 2011 7:26 pm

yah ive got it on disk.

91_ka24de · Post by **91_ka24de** » Fri Jan 14, 2011 12:00 am

Ok. Lol I pulled all plugs and re did test and my numbers are 180 180 180 124.. doing test tomorrow and ill see if the rings are toast or the hg or valves. Hopefully just hg. (Fingers crossed)

91_ka24de · Post by **91_ka24de** » Fri Jan 14, 2011 6:56 pm

Cylinder 4 leak down test. Fail. All pressure comes out of oil dip stick.

Jmcc · Post by **Jmcc** » Fri Jan 14, 2011 7:56 pm

damn bro ight do this do not pull every piston.

just pull that one check the ring gaps on the bad cylinder. if at worst get a new set of ring do a quick hone and put it back togeather and try it again. if the others are fine do not f with them.

i have done this before and it has worked with no problems.

91_ka24de · Post by **91_ka24de** » Fri Jan 14, 2011 11:53 pm

Do I have to have it rehoned with one piston w new rings?

Jmcc · Post by **Jmcc** » Sat Jan 15, 2011 10:13 am

how long ago did you have it honed??

if its still very low milage you can proly get away with it. but i would get the 3 stoned
honers with fine stones. and do a light hone on it to be on the safe side.

91_ka24de · Post by **91_ka24de** » Sat Jan 15, 2011 11:50 am

No miles on it. I've just let it idel and reved it to fix all the problems

Jmcc · Post by **Jmcc** » Sat Jan 15, 2011 7:19 pm

i would still do a light hone non it to be safe.

91_ka24de · Post by **91_ka24de** » Sat Jan 15, 2011 8:15 pm

Honestly. I got no idea how to do that lol. Would be scared to accidently mess it up some how

Walperstyle · Post by **Walperstyle** » Sat Jan 15, 2011 9:18 pm

Light hone can be done easily, however, a machine shop can do it for cheap and probably provide some kind of pseudo warranty to make you feel warm inside.