Notices
86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Hissing sound, Low idle / misfire - 22re

Old 02-08-2019, 12:27 AM
  #1  
Registered User
Thread Starter
 
Join Date: Jan 2019
Posts: 32
Likes: 0
Received 4 Likes on 4 Posts
Hissing sound, Low idle / misfire - 22re

Hey all! I don't know much of the history of my new '86 california 4runner but been fixing it up.

The issue now is misfiring / low idle

1) New spark plugs and wires - no change
2) Adjusted TPS / cleaned idle screw (it was real sooty) / adjusted throttle cable - Now seems to not misfire anymore, but idle is still low. note: The TPS was almost good but still off. I'm pretty sure that's what did it.

BUT now it still idles low and the screw won't get it any higher.

One thing I've noticed is that there's a loud hissing sound coming from around the EFI. Sounds like a lot of air escaping a tube or something. Like a pretty noticeable (loud enough to hear very well over the engine) blowing sound. I'm going to be replacing the vacuum lines, but i can't see where this sound is coming from. Any suggestions?

Also the idle screw o-ring is super hard. I thought it was just a basic o-ring, but it feels rock hard to the touch. Is it just old or is it supposed to be hard? Can I just pull it and put in any rubber o-ring that fits? I tried prying at it with a small flathead but it wouldn't budge so I thought I'd check with you guys before ripping it out.
frikinyankee is offline  
Old 02-08-2019, 03:06 AM
  #2  
Registered User
 
Join Date: Oct 2018
Posts: 428
Received 44 Likes on 40 Posts
The hissing is normal. What is "low idle"? Is your tach working correctly? measure actual idle RPMs with a laser or LED unit. 19,95 on the web.
ev13wt is offline  
Old 02-08-2019, 03:10 AM
  #3  
Registered User
 
Discombobulated's Avatar
 
Join Date: Oct 2011
Location: Denver CO
Posts: 1,836
Likes: 0
Received 35 Likes on 27 Posts
I tried to find an o ring that would work but with no success I ordered one from here: https://www.lceperformance.com/22RE-...-p/1061049.htm

You are on the right track checking for vacuum leaks, make sure nothing is leaking and then go from there with more difficult troubleshooting. You will have some hissing with these motors though as stated above.

Last edited by Discombobulated; 02-08-2019 at 03:11 AM.
Discombobulated is online now  
Old 02-08-2019, 05:38 AM
  #4  
Registered User
 
Paul22RE's Avatar
 
Join Date: Feb 2018
Location: NNJ
Posts: 223
Received 20 Likes on 16 Posts
This Toyota o-ring fits perfect: 90301-07001
Paul22RE is offline  
Old 02-08-2019, 05:52 AM
  #5  
Registered User
 
87-4runner's Avatar
 
Join Date: Mar 2012
Location: Oklahoma
Posts: 444
Received 44 Likes on 42 Posts
Take a crisp new dollar bill and hold it as close as you can get it to the end of your exhaust pipe...
if every now and then it sucks it to the exhaust pipe and kinda pops... you have a leaking valve...
adjust the valves and some of the low idle miss will go away...
87-4runner is offline  
Old 02-12-2019, 01:03 PM
  #6  
Registered User
Thread Starter
 
Join Date: Jan 2019
Posts: 32
Likes: 0
Received 4 Likes on 4 Posts
Originally Posted by 87-4runner View Post
Take a crisp new dollar bill and hold it as close as you can get it to the end of your exhaust pipe...
if every now and then it sucks it to the exhaust pipe and kinda pops... you have a leaking valve...
adjust the valves and some of the low idle miss will go away...
OOOkkkk so it does suck that dolla into the pipe here and there.

Also wanted to add that it usually starts up smooth when cold, then it takes a few seconds (like 5-10 seconds) before it starts acting up.

Is there anything besides the valves that could cause the sucking? I had done a quick look at the valves and they didn't seem very off, but I guess I'll check closer.

As for adjusting them, the COLD or HOT discussion... this might open a can of worms, but what would you suggest? 22re performance website suggests cold since it's more consistent, I feel like they would know their ˟˟˟˟˟...
frikinyankee is offline  
Old 02-12-2019, 01:10 PM
  #7  
Registered User
Thread Starter
 
Join Date: Jan 2019
Posts: 32
Likes: 0
Received 4 Likes on 4 Posts
Originally Posted by frikinyankee View Post
OOOkkkk so it does suck that dolla into the pipe here and there.

Also wanted to add that it usually starts up smooth when cold, then it takes a few seconds (like 5-10 seconds) before it starts acting up.

Is there anything besides the valves that could cause the sucking? I had done a quick look at the valves and they didn't seem very off, but I guess I'll check closer.

As for adjusting them, the COLD or HOT discussion... this might open a can of worms, but what would you suggest? 22re performance website suggests cold since it's more consistent, I feel like they would know their ˟˟˟˟˟...
Also, forgot to add that the timing is adjusted by hand and ear. I just adjusted it to what sounds best and misfires less with these not best conditions... so that might lead to this too?
frikinyankee is offline  
Old 02-13-2019, 11:30 AM
  #8  
Registered User
Thread Starter
 
Join Date: Jan 2019
Posts: 32
Likes: 0
Received 4 Likes on 4 Posts
Ok so i changed the idle screw o-ring, adjusted the valves and properly set timing, made a world of difference!

Now I can listen to a proper valve orchestra! All the valve spacings were too tight, to the point where, yes, i suspect exhaust may have had trouble closing all the way

I did it as per the manual, hot engine. Will probably do it again in a few weeks or so just to check up on it.

Thanks for the tips!
frikinyankee is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
pulattie58
86-95 Trucks & 4Runners
6
01-17-2010 07:15 PM
M3Man02
95.5-2004 Tacomas & 96-2002 4Runners
35
04-09-2006 05:17 PM
green91runner
86-95 Trucks & 4Runners
17
08-08-2005 04:25 PM
Sleepydog
Maintenance & Repair Archives
1
05-25-2005 08:21 PM
mike_d
95.5-2004 Tacomas & 96-2002 4Runners
11
11-14-2003 06:50 AM


Thread Tools
Search this Thread
Quick Reply: Hissing sound, Low idle / misfire - 22re


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: