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Post by Neuspeed94 on Feb 11, 2004 20:19:04 GMT -5
Is there anyway I can raise the idle speed on my 1994 fuel-injection justy motor? It currently idles at 700 rpm but I want it to idle at around 900 rpm.
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Post by Justyracer on Feb 11, 2004 22:08:19 GMT -5
did you check the timing ?
a "funny way" to do it...is to tite the screw under the gaz cable on the intake...but ?
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Post by Neuspeed94 on Feb 11, 2004 23:17:08 GMT -5
did you check the timing ? a "funny way" to do it...is to tite the screw under the gaz cable on the intake...but ? But what? Also, why would I need to check the timing? Which method do you think would be the best for reliability?
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Post by Justyracer on Feb 12, 2004 7:56:21 GMT -5
well....the timing has alot to do whit the idle RPM...
if you take your distributor and change rock it foward or backword....changing the degrees it will cahnge the idle speed...but also screw up your timing...and loose power....
your timing mite just be off a litle...
Im gessing you want to make it idle a litle bit more becose its shaking like hell at low idle and everything is cracking and makeing noise LOL ;D you should see mine LOL whti the nylon engine mount...LOL at 1000rpm its like your in the mitle of a heartquake....all my gauge are shacking like hell...but once i rev it up a litle it stop.
if you dont want to play whit timing just play whit the screw under the gaz cable on the intake.
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Post by Neuspeed94 on Feb 12, 2004 11:00:36 GMT -5
Im gessing you want to make it idle a litle bit more becose its shaking like hell at low idle and everything is cracking and makeing noise LOL ;D if you dont want to play whit timing just play whit the screw under the gaz cable on the intake. How did you know?? Are you a mind reader? ;D Where is this screw at? I looked for it but I can't find it.
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Post by Justyracer on Feb 12, 2004 17:55:13 GMT -5
on the intake...were the gaz cable stop...its like a litle puley...the screw is attach to that puley.
you will see...the screw is touching some kind of a rubber sensor....
make shure your gaz cable is tite...and play whit that litle srew it very easy to understand.
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Post by Neuspeed94 on Feb 16, 2004 18:55:01 GMT -5
I just got done adjusting what you told me to, and it did not change the idle speed at all. I adjusted it almost to the maximum in both directions but it won't change the idle speed. The reason it won't change it is because that rubber sensor-type thing underneath the bolt I adjusted has a spring in it. When I unscrew the bolt more so that the bolt sticks out farther toward the sensor, the bolt pushes the sensor in more so that the throttle cable goes back to the same position it was in before. Any more ideas? Or ideas to stop the sensor from pushing in, or is the sensor important?
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Post by Justyracer on Feb 16, 2004 20:16:34 GMT -5
i really dont know if that spring is even a sensor or if it do anything ?
But it did do a diference wen i played whit mine...
from that principle there is alot of thing you can do...
the best way is to time the engine......i beleive the suggested timing/rpm is 9000rpm ? it tells you on the sticker on the hood.
give your distributor a couple of degree more or less until its at 9000rpm...see if the car still work good ? it mite even work better ? you can take a pen and make a mark to know were it was befor you started to play whit it ? that way if nothing work...you just place it back were it was...
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Post by Justy4x4 on Feb 16, 2004 21:29:00 GMT -5
The idle adjustment screw is underneath that little rubber plug on the top of the throttle body. It's located just to the right of center. The screw underneath is actually an air bleed screw. Turning it out (counter clockwise) will increase airflow at idle and raise your idle RPM. I just got done adjusting what you told me to, and it did not change the idle speed at all. I adjusted it almost to the maximum in both directions but it won't change the idle speed. The reason it won't change it is because that rubber sensor-type thing underneath the bolt I adjusted has a spring in it. When I unscrew the bolt more so that the bolt sticks out farther toward the sensor, the bolt pushes the sensor in more so that the throttle cable goes back to the same position it was in before. Any more ideas? Or ideas to stop the sensor from pushing in, or is the sensor important?
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Post by Justyracer on Feb 16, 2004 22:15:09 GMT -5
yes...that will do it ...i have seen my mecanic play whit this one...
i was not shure what it was for...or if it would do the trick...i guess it doz..
we played whit this one wen we ad a pcv valve problem..
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Post by Neuspeed94 on Feb 17, 2004 13:26:30 GMT -5
Yep, that did it. I did 8 counter clockwise turns of the screw and it brought the rpms up from 700rpm to 800rpm and now the car doesn't shake at all. I also marked the hole that the screw is in with a permanent marker so that I can return it back to normal if I need to. Thanks for the help! ;D
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Post by Justy4x4 on Feb 17, 2004 13:33:06 GMT -5
You turned it 8 full turns?!?! That seems like an awefull lot for only a 100 RPM gain. It might be time to clean out the throttle body.
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Post by Neuspeed94 on Feb 17, 2004 13:50:33 GMT -5
Sorry, I misspoke. I turned it 4 full turns. I made the longer slots in the screw pass my marks 8 times.
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Post by Neuspeed94 on Feb 17, 2004 21:10:08 GMT -5
After fine tuning it, it is now 1 and 1/2 turns past what it was stock and the car idles at about 825 rpms with no shaking at all. ;D
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