Discovery II Talk about the Land Rover Discovery II within.
Sponsored by:
Sponsored by:

Best way to Compression Test the cylinders

Thread Tools
 
Search this Thread
 
  #41  
Old 08-25-2015, 01:04 PM
antichrist's Avatar
Baja
Join Date: Sep 2007
Location: Georgia, USA
Posts: 5,232
Received 51 Likes on 44 Posts
Default

Well, if that's all the high it got I don't think it would have fouled up connections like at the fuel pump...but it really sounds like something electrical got wet, worked for a while then corroded enough to fail.
 
  #42  
Old 08-25-2015, 06:02 PM
R0VERGUY's Avatar
Mudding
Join Date: Aug 2015
Posts: 193
Received 54 Likes on 34 Posts
Default

Originally Posted by caymandrew
What the heck is the box under the center of the truck the fuel lines run into? I can't find it in the RAVE?
Are you talking about the charcoal canister on the passenger frame rail?
Best way to Compression Test the cylinders-untitled.jpg
 

Last edited by R0VERGUY; 08-25-2015 at 06:22 PM.
  #43  
Old 08-25-2015, 06:06 PM
R0VERGUY's Avatar
Mudding
Join Date: Aug 2015
Posts: 193
Received 54 Likes on 34 Posts
Default

What trouble codes are you getting?

Have you confirmed you have good fuel pressure yet?
 

Last edited by R0VERGUY; 08-25-2015 at 06:27 PM.
  #44  
Old 08-25-2015, 06:55 PM
june82000's Avatar
Rock Crawling
Join Date: Jul 2015
Posts: 257
Received 15 Likes on 15 Posts
Default

Have you tried disconnecting the exhaust, or tried a different set of cats? Could they be clogged? Same for the muffler. How are the O2 sensors?
 
  #45  
Old 08-26-2015, 09:27 AM
caymandrew's Avatar
Winching
Thread Starter
Join Date: Mar 2013
Location: Destin FL
Posts: 501
Received 6 Likes on 6 Posts
Default

Originally Posted by june82000
Have you tried disconnecting the exhaust, or tried a different set of cats? Could they be clogged? Same for the muffler. How are the O2 sensors?
About the error codes, P1884 seems to be the most consistent.

I went to O'reilly's and rented a fuel pressure test kit, not a single adapter in that kit would fit the test point, which the cap from screws onto and regular bike tire. I'll need to find another kit somewhere that actually fits this fuel system.

I don't believe anything in the exhaust system is clogged as it ran for weeks, my only issue was I that I couldn't floor it. When it starts now I have good flow for a second from the exhaust, very noticeable after squirting some oil into cylinder #3 for the compression test. I was pumping out white smoke for a little bit.

I have a new set of o2 sensors I'll try today.
 

Last edited by caymandrew; 08-26-2015 at 09:29 AM.
  #46  
Old 08-26-2015, 10:55 AM
caymandrew's Avatar
Winching
Thread Starter
Join Date: Mar 2013
Location: Destin FL
Posts: 501
Received 6 Likes on 6 Posts
Default

OK- These O2 sensors in the front. After being submerged for so long, and probably being the originals, they are not even budging! I've soaked tem in pb blaster, but they are seized like nobodys business. Any tips?
 
  #47  
Old 08-26-2015, 11:08 AM
Two Rock's Avatar
Three Wheeling
Join Date: Jun 2013
Posts: 69
Likes: 0
Received 9 Likes on 7 Posts
Default

Buy a map gas torch (yellow bottle) and heat the hell out of the base of it and where it threads in to. Heat is much more effective then penetrating oil.
 
  #48  
Old 08-26-2015, 11:49 AM
R0VERGUY's Avatar
Mudding
Join Date: Aug 2015
Posts: 193
Received 54 Likes on 34 Posts
Default

Originally Posted by caymandrew
OK- These O2 sensors in the front. After being submerged for so long, and probably being the originals, they are not even budging! I've soaked tem in pb blaster, but they are seized like nobodys business. Any tips?
-Put some vise grips on them and clamps it down really tight. Use a hammer to try and break it loose.
or
-You can cut the wire on the old sensor and you might be able to get a deep socket on it.
 
  #49  
Old 08-26-2015, 12:24 PM
caymandrew's Avatar
Winching
Thread Starter
Join Date: Mar 2013
Location: Destin FL
Posts: 501
Received 6 Likes on 6 Posts
Default

I bought a deep socket just incase but I'm afraid of cutting the wire and still not being able to get it out. I'll try the heat first!
 
  #50  
Old 08-26-2015, 12:35 PM
lordmorpheus's Avatar
Pro Wrench
Join Date: May 2010
Location: St Louis MO
Posts: 1,918
Received 86 Likes on 73 Posts
Default

I cut the wires off my sensors and put the box end of a combination wrench on it. No chance of slipping that way.
 


Quick Reply: Best way to Compression Test the cylinders



All times are GMT -5. The time now is 05:22 AM.