Honda Prelude Forum
 
Go Back   Honda Prelude Forum > Tech-Talk > General Tech Talk

Thread Title
H22 P0303 and Low Compression - Any common failures?

 
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 11-18-2007, 09:38 PM
erikras's Avatar
Member
 
Join Date: Sep 2007
Location: Cleveland, OH
Posts: 42
iTrader: (0)
erikras is on a distinguished road
Send a message via AIM to erikras Send a message via Yahoo to erikras
Icon8 H22 P0303 and Low Compression - Any common failures?

I purchased a used H22A4 out of a '99 Prelude SH and dropped it into my '97 Prelude. I got it running Friday night and took it out for a spin. I noticed a slightly rough idle when you came to a stop. But it seemed to happen only intermittantly. So I figured the EGR valve was probably sticking open or something simple like that. Well today I took it out again and the roughness continued. The CEL finally came on and it threw P0303 (Misfire Cyl 3) and P1399 (not even listed in the manual). I jumped past all the injector diagnostics stuff knowing from instinct that this was no injector issue. A compression test revealed the following:

Cyl 1 - 170psi
Cyl 2 - 175psi
Cyl 3 - 100psi
Cyl 4 - 165psi

Obviously there's an internal mechanical problem with Cyl #3. Have you guys run into any "common" failures on the H22's? Bent valves? Something in the VTEC system holding a valve open a few thousandths? Cracked rings?

I want to reiterated that this does not happen every time I come to stop. Probably only 1 out of 3 times which makes the problem very odd to me.

I don't have a cylinder leak down tester. My compression test guage does have a standard air chuck fitting so I can put some air into the cylinder and see if I can hear a hiss at the tailpipe or intake. I'll probably do that tomorrow since I'm way too frustrated to work on it more tonight. A wrench would probably get thrown. haha.
__________________
Erik R.
'97 Prelude - Project car. Future racecar?
'03 Acura RSX - Daily Driver
ASE Master Technician & L1 Adv. Engine Performance
Mechanical Engineer
Reply With Quote
  #2 (permalink)  
Old 11-18-2007, 09:43 PM
ogsmakdade's Avatar
functioning on impatience

Photobucket
 
Join Date: Jun 2006
Location: progression through unlearning
Posts: 13,921
iTrader: (6)
ogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond repute
Send a message via AIM to ogsmakdade
it's not too hard to bend valves or blow rings in that motor. hope you got her cheap. was your timing set?
__________________

Quote:
Originally Posted by Sideswipe SI View Post
OGGS is a stuff a nerd in the locker type. He's only mellowed out 3 months ago.
Quote:
Originally Posted by wing8806 View Post
As it is, I wouldn't trust you washing my balls. And I typically let any trick hoe from OT do that.
Quote:
Originally Posted by bykfixer View Post
Reading this thread was like watching pulp fiction the first time...

Cool quote Utopia.
Reply With Quote
  #3 (permalink)  
Old 11-18-2007, 09:50 PM
erikras's Avatar
Member
 
Join Date: Sep 2007
Location: Cleveland, OH
Posts: 42
iTrader: (0)
erikras is on a distinguished road
Send a message via AIM to erikras Send a message via Yahoo to erikras
Quote:
Originally Posted by ogsmakdade View Post
it's not too hard to bend valves or blow rings in that motor. hope you got her cheap. was your timing set?
I'd consider $940 including the trans, wiring harness, and ECM cheap. The timing is set. I put a new timing belt on the engine before putting it in the car. And if it was a timing/valve duration overlap issue, I'd assume that it would lead to low compression on more than one cylinder. Also, I checked the timing on the motor before taking the old belt off. It was dead on then.
__________________
Erik R.
'97 Prelude - Project car. Future racecar?
'03 Acura RSX - Daily Driver
ASE Master Technician & L1 Adv. Engine Performance
Mechanical Engineer
Reply With Quote
  #4 (permalink)  
Old 11-18-2007, 09:52 PM
erikras's Avatar
Member
 
Join Date: Sep 2007
Location: Cleveland, OH
Posts: 42
iTrader: (0)
erikras is on a distinguished road
Send a message via AIM to erikras Send a message via Yahoo to erikras
Forgot to mention. I plan on doing a wet compression test with some oil in the cylinder tomorrow. That will tell if it's the rings hopefully. How much oil should I drip into the cylinder?
__________________
Erik R.
'97 Prelude - Project car. Future racecar?
'03 Acura RSX - Daily Driver
ASE Master Technician & L1 Adv. Engine Performance
Mechanical Engineer
Reply With Quote
  #5 (permalink)  
Old 11-18-2007, 09:58 PM
twokexlv6coupe's Avatar
little green ghouls, buddy!!
Photobucket
 
Join Date: Apr 2006
Location: kitten mittens
Posts: 17,844
iTrader: (9)
twokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond repute
Send a message via AIM to twokexlv6coupe
a capfull will do.
__________________

1995 Honda Prelude SE Turbo; 250whp, 275wtq @ 10psi Soldddd!!!

2000 Acura TL; DD
2005 Stage2.5+ Subaru WRB STi : RzKar!
Ivey Tuned - Advan - Cobb - Rallispec - CP - Perrin - ACT - KillerB - Carillo - TurboXS - Defi - Innovate - Walbro - DeatschWerks - Feal - H&R - Alpine - Infiniti - Curt

2001 Kawasaki STX1100 D.I. - Sold!
2007 Sea-Doo RXT 215; ET 127 +3 S/C impeller, DIY 3" intake, DIY resonator delete/free flow exhaust, DIY oil catch can, Rule 500gph bilge pump


Quote:
Originally Posted by Brash View Post
But you need that scoop on the hood. Is it true that they're big enough to fit your lunch box and all your camera gear in it?
Reply With Quote
  #6 (permalink)  
Old 11-18-2007, 10:00 PM
ogsmakdade's Avatar
functioning on impatience

Photobucket
 
Join Date: Jun 2006
Location: progression through unlearning
Posts: 13,921
iTrader: (6)
ogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond reputeogsmakdade has a reputation beyond repute
Send a message via AIM to ogsmakdade
keep us updated.
__________________

Quote:
Originally Posted by Sideswipe SI View Post
OGGS is a stuff a nerd in the locker type. He's only mellowed out 3 months ago.
Quote:
Originally Posted by wing8806 View Post
As it is, I wouldn't trust you washing my balls. And I typically let any trick hoe from OT do that.
Quote:
Originally Posted by bykfixer View Post
Reading this thread was like watching pulp fiction the first time...

Cool quote Utopia.
Reply With Quote
  #7 (permalink)  
Old 11-18-2007, 10:01 PM
bdizzel124's Avatar
Gold Member
 
Join Date: Sep 2007
Location: Jacksonville, FL
Posts: 874
iTrader: (1)
bdizzel124 has a spectacular aura aboutbdizzel124 has a spectacular aura about
Send a message via AIM to bdizzel124
My best guess is a gasket? let us know the out come
__________________


White Prelude Bandwagon
Reply With Quote
  #8 (permalink)  
Old 11-18-2007, 10:02 PM
bdizzel124's Avatar
Gold Member
 
Join Date: Sep 2007
Location: Jacksonville, FL
Posts: 874
iTrader: (1)
bdizzel124 has a spectacular aura aboutbdizzel124 has a spectacular aura about
Send a message via AIM to bdizzel124
ohhhh yea check the gaskets around the valve stems 2, because oil might be dripping between the valve stem and in to the cylinder
__________________


White Prelude Bandwagon
Reply With Quote
  #9 (permalink)  
Old 11-18-2007, 10:09 PM
erikras's Avatar
Member
 
Join Date: Sep 2007
Location: Cleveland, OH
Posts: 42
iTrader: (0)
erikras is on a distinguished road
Send a message via AIM to erikras Send a message via Yahoo to erikras
Quote:
Originally Posted by bdizzel124 View Post
ohhhh yea check the gaskets around the valve stems 2, because oil might be dripping between the valve stem and in to the cylinder
How will that lead to low compression?
__________________
Erik R.
'97 Prelude - Project car. Future racecar?
'03 Acura RSX - Daily Driver
ASE Master Technician & L1 Adv. Engine Performance
Mechanical Engineer
Reply With Quote
  #10 (permalink)  
Old 11-19-2007, 05:33 AM
preluderacer015's Avatar
Member
 
Join Date: Jul 2007
Location: Germany
Posts: 68
iTrader: (0)
preluderacer015 is on a distinguished road
Send a message via MSN to preluderacer015
I'm thinking it might be a bad piston ring more than likely. But don't rule out a bent valve. Could be both, but I'm leaning toward a worn out piston ring, hopefully your cylinder wall isn't scarred and losing compression that way. Beaucoup money there :(. Good luck though, keep us posted.
__________________
RHD WhAt!?!?!
Reply With Quote
  #11 (permalink)  
Old 11-19-2007, 10:10 PM
erikras's Avatar
Member
 
Join Date: Sep 2007
Location: Cleveland, OH
Posts: 42
iTrader: (0)
erikras is on a distinguished road
Send a message via AIM to erikras Send a message via Yahoo to erikras
Happy Happy Joy Joy (My poor attempt at a Ren & Stimpy impression. Sorry.)

So I pulled the car in the garage as quickly as I could without the engine warming up and did three dry compression tests on the Cyl #3.

100psi
100psi
100psi

The same results as lastnight pretty much. So then I added a cap full of Honda (made by Mobil) 5W30 oil. This is the same stuff they rate for 10,000 miles in their newer engines so I figure it has to have some good detergent properties. I did 4 runs of a wet compression test.

170psi
165psi
150psi
150psi

Now 170 would have put it right up with the other three cylinders. However, 150psi puts it within the service limits specified by Honda. (185psi Nominal, 135psi Minimum, 28psi max variation)

I also hooked up the vacuum guage and got nothing but a steady needle between -17psig and -20psig depending on RPM. (As the engine warmed up, RPM's decreased and vacuum increased.)

I then test drove the car for about 6 miles. It was already fully warmed up when I left my house from the other tests and fiddling around. I drove with my scantool connected and data logging. I recorded nothing out of the ordinary. Not once did it misfire or idle rough! Could it have been as simple as a stuck piston ring? If it were a scored or cracked cylinder, I'd assume that the oil I poured in the cylinder would have eventually worn off or burnt away.

Tomorrow I will take it out for a longer drive and see what happens. At this point I'm keeping my fingers crossed.
__________________
Erik R.
'97 Prelude - Project car. Future racecar?
'03 Acura RSX - Daily Driver
ASE Master Technician & L1 Adv. Engine Performance
Mechanical Engineer
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 02:57 PM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors


Copyright © 2006-2009 PreludeZone.com All Rights Reserved.