So I've got a 01 Gsr, and I just recently swapped the stock IM out for the Skunk2 Pro Series IM.

Originally I had some vacuum leaks, which I now believe are all fixed, however, I seem to have some sort of Rev hang whenever I'm driving/idling. Also, I'm running very rich. I'm still new to the whole Honda scene, but I've done my best to try and find threads already started with my specific problems, but I can't seem to find any that would help me out.

Thanks in advanced!

 

What makes you think you're running rich?

What do you mean rev hang? If I understand that correctly you might have the throttle cable adjusted incorrectly and our the throttle blade is sticking...

 

changing the intake manifold makes drastic changes to the fuel and ignition requirements by the ecu. you need a tune, no way around it, you need a tune.

 

If you purchased that intake new, make sure you are using a minimum of a 68mm throttle body. Skunk2 has changed the inlet size on that manifold to 70mm right from the factory. If you use something smaller than 68mm, the IACV and MAP sensor passageways will hang open in the main bore, creating an internal vacuum leak.

 

Is there a CEL since you eliminated the butterflies in the stock IM? I would highly recommend you have it tuned cuz thats a big big change on a gsr motor.

 

Hey Guys. Here are some tips for idle problems. Very first thing to do after changing intake tract: disconnect IACV while engine is running and set your idle screw to factory spec. Turn all the way in and back it out 2 full turns. Turn engine off, reconnect IACV plug and start engine. If the ECU is working correctly it should "readjust itself" within a few minutes or less to 650-700 RPM. If there are other problems above idle this is usually due to timing issues or spark related. I am also a firm believer in street tuning vs. dyno's

 

What if there is no screw on the TB to adjust idle? If there were a vaccum leak, could that be the cause?

 

vacume leaks can always be a cause for idle problems and they are usually easy to find. Another overlooked place for idle problems is the PCV which is on the backside of the b18 block under the intake manifold. Clean it out and make sure it is moving freely.

 

forgot, there should be an idle screw on all valve bodys unless they are aftermarket which possibly could be the case. Look directly around the front of your TB and there should be a large brass screw unless it has been covered by the factory...it is there!

 

you NEED a tune, plain and simple.

 

Idle issues? You know of course if you have any leakage from your oil fill cap etc. it will also mess with your idle. I tryed an interesting test today with a common PCV on the b18c1. In the old days "when I was young" the crankcase breather was open and usually blew smoke rings if the rings were getting worn. I opened up my breather "don't let deq know" and put an old harley filter in it's place. I noticed my idle was smoother than ever before and I picked up a little more gusto at around 75-8K rpm?? I'm going to do a little more testing with this and let you all know about some hidden power and smoother VTEC transition. This does not apply to all that use the term "cracks hard!" LoL

 

Yeah - aftermarket. If there is no screw, then how do I adjust idle?

Shhh everybody..

 

on most aftermarket TBs you can usually loosen the butterfly shaft screw and slightly open your TB valve to raise your idle or vice/versa. If you mess with this adjustment make sure to put some grease around the shaft so it doesn't leak any more air. Another old school trick is to tighten your throttle cable to raise the idle also. When you set idle adjustments you should always reset your ecu so the new idle adjustment will be "learned" by the brain. The brain isn't quite as smart as we are, it needs to be told what to do.

 

Loosen the screws on the TPS sensor and adjust accordingly.

The vibe I'm getting from you is that you seem to think nobody knows their way around an engine bay. I assure you this is not true. Be careful how you talk to people man...

 

my 68 charger is trying to call me home. the only tps on the charger is my foot

 

not to start a new thread but a question for the engine bay experts. My buddy has an oil leak at the top left side of his head "vtec side". I have cleaned it for him several times trying to find the leak and it seems to be coming from the head although his engine runs perfect. No oil in the water or vice/versa. Checked all the o rings seals, distributer, valve cover, vtec soleinoid etc. Any of you guys ever seen a head gasket leak clean oil before without any performance issues??

 

if youve got oil leaking from the "top left" then id check the distributor o-ring, vtec solenoid gasket and cam plug. is the distributor side of the cylinder wet or is it more the block/transmission? if its the latter, then id suspect the leak is coming from the oil drain holes in the head/block. if thats the case, pull the head, replace the gasket and use "hondabond" on both sides of the headgasket where the oil drain holes are.

im beginning to think you dont know your way around a car...

 

the oil is ending up down by the bottom of the block next to the tranny. Have you had this happen with the head gasket while still showing no other signs of blown head gasket? Runs perfect, doesn't use any oil but every time you clean the wet spot by the bottom it reappears magicly? I hesitate to pull the head but it could be the only fix. Ever have a cracked head or block do this?

 

It's a common problem. You're making it more complicated than it is.

 

you live and you learn, even at 62! Thanks for the input. My 68 charger is way easier to diagnose when it's sick.

 

yea, I guess. for me when i had the issue I just narrowed down the source and fixed it. no different than diagnosising a 62 valiant.

 

turns out it was a microsopic leak from the vtec solenoid that even the honda tech guy couldn't see, he was about to pull the head! Now the idle all of a sudden is going hi and low like a blues singer. I really think things used to be much simpler before ecu's, ecm's etc. etc. My little 96 rocket is now for sale in favor of another e30. Maybe even an older 911T. I used to sit under the hood of my 51 chevy pick up and tune it while having lunch and never had to text or answer the cell because there weren't any

 

got tired of all the little honda problems so I put it on CL for to much $$ and it was sold the next day! It's been fun talkin with you guys...take it easy. I may be back some day, thanks again.