4.2 with 2 dead cylinders - Land Rovers Only

Supernatural · 01-05-2008, 03:28 PM

All. My friend called me during the Xmas holiday. She has a 93 LWB RRC with 2 dead cylinders, mechanic said so.I'm thinking electronic issue, but she said he did a compression test. How available are these engines? Is there any other swap i can use? 4.6? Any ideas are appreciated.

thanks.

carlosz · 01-06-2008, 07:07 PM

I would get a second diagnosis, what where the simptoms which made this mechanic come to the conclussion of two dead cilynders?
what is the running condition of the engine, overheated, not serviced, died running?
how did he verify it?
we need more info in order to give proper orientation as to what to do.

ArmyRover · 01-06-2008, 07:43 PM

x2 what Carlos said. what are the compression figures by dead cyl's does he mean no compression no spark both?

4.6 swap can be done but is very expensive, sticking with another 4.2 or some of the old buick motors are possible for swapping.

Supernatural · 01-07-2008, 12:54 PM

The engine has newer cylinder heads, and new radiator, less than 2 years old. (going from what my friend told me) It suddenly started running this way she said, very rough. She brought it to her mechanic, she said that he did a compression check, and it had 2 dead cylinders. It has new plugs, and spark from what she told me. Seems odd to me too.

bargecapt · 01-07-2008, 01:53 PM

seems to me, that if 2 cylinders were that bad, where there is little or no compression, there would be a good bit of smoke or the oil would be diluted with gas

TerryS · 01-07-2008, 01:59 PM

Even when you come up with two no-compression cylinders, it does not automatically mean the engine has to be replaced. It may be severely carboned valves are stuck in the guides. Are the two adjacent, or no ?
Even if you dropped a valve and it got punched stright thru the top of the piston, the liklyhood of it happening in 2 cylinders is remote.
The easiest choice, if you took the easy route, is to replace a 4.2 with a 4.2, but rebuilding is easier yet.

p76rangie · 01-07-2008, 02:46 PM

Rover motors chew through cams. If the motor has done more than 60,000 miles, the cam would be worn.

A compression test tells very little. Need to do a leak down test. That is, they pump air into the cylinder and listen to where it is escaping, eg through the valves, rings, etc.

carlosz · 01-07-2008, 07:37 PM

I may suggest another mechanic, it seem rather fishy to me that one would diagnose engine replacement just because 2 cilynders seem to be dead. highly unlikely
I would ask to investigate further to find a real reason, boy if I attempted to pull that at work I would be terminated almost inmediately.
I dont mean to sound like an A..hole but its my opinion from your comment that some one wants to get the money they spent during the holidays from your friends pocket.

Supernatural · 01-11-2008, 12:29 PM

It is currently at my friends shop. He believes it to be the distributor. It has fuel, spark, compression. But wont start.

He believes the distributor is either off or? To be con't.............

:

Time to

Supernatural · 01-11-2008, 01:49 PM

It's running..... Timing was off

57loboy · 01-11-2008, 02:49 PM

Well now - that's a good thing to find out! Glad it was that after our conversation the other night. Did you end up getting it for yourself?

p76rangie · 01-11-2008, 04:45 PM

It always pay to get a second opinion when the answer doesn't sound right.

Supernatural · 01-12-2008, 05:39 AM

Quote:

Originally Posted by 57loboy

Well now - that's a good thing to find out! Glad it was that after our conversation the other night. Did you end up getting it for yourself?

Not out of the woods yet. Still has an issue. This truck has many new pieces thousands spent on it in the last year or so I have the docs to prove it, and will likely be parted out, or sold to as is. to be cont.

Supernatural · 01-12-2008, 03:00 PM

I Agree

Quote:

Originally Posted by carlosz

I dont mean to sound like an A..hole but its my opinion from your comment that some one wants to get the money they spent during the holidays from your friends pocket.

Supernatural · 01-12-2008, 03:06 PM

I want to talk with someone regarding some issues. I put it FS in the classifieds. It's a nice truck with many new OEM parts. Let's make a deal asap.

Quote:

Originally Posted by 57loboy

Well now - that's a good thing to find out! Glad it was that after our conversation the other night. Did you end up getting it for yourself?

01-05-2008, 03:28 PM	#1 (permalink)
Supernatural Member Join Date: Jan 2008 Posts: 14 Gallery: 0	4.2 with 2 dead cylinders All. My friend called me during the Xmas holiday. She has a 93 LWB RRC with 2 dead cylinders, mechanic said so.I'm thinking electronic issue, but she said he did a compression test. How available are these engines? Is there any other swap i can use? 4.6? Any ideas are appreciated. thanks. Last edited by Supernatural : 01-06-2008 at 06:36 AM.

01-06-2008, 07:43 PM	#3 (permalink)
ArmyRover Rebuilding Rover Join Date: Sep 2007 Location: NH Posts: 1,859 Gallery: 0	x2 what Carlos said. what are the compression figures by dead cyl's does he mean no compression no spark both? 4.6 swap can be done but is very expensive, sticking with another 4.2 or some of the old buick motors are possible for swapping. __________________ "Only two defining forces ever offered to die for you, Jesus Christ and the American G.I. One died for your soul, the other for your freedom." http://snhlr.org/ 91 Range Rover Classic 90 RRC Parts truck 94 Saab gas mileage beater

01-07-2008, 01:53 PM	#5 (permalink)
bargecapt bargecapt Join Date: May 2006 Location: spartanburg, sc Posts: 76 Gallery: 0	2 dead cyl seems to me, that if 2 cylinders were that bad, where there is little or no compression, there would be a good bit of smoke or the oil would be diluted with gas

01-11-2008, 12:29 PM	#9 (permalink)
Supernatural Member Join Date: Jan 2008 Posts: 14 Gallery: 0	It is currently at my friends shop. He believes it to be the distributor. It has fuel, spark, compression. But wont start. He believes the distributor is either off or? To be con't.............: Time to

01-11-2008, 01:49 PM	#10 (permalink)
Supernatural Member Join Date: Jan 2008 Posts: 14 Gallery: 0	It's running..... Timing was off Last edited by Supernatural : 01-12-2008 at 03:03 PM.

Remove Advertisements Sponsored Links
Land Rovers Only - Land Rover Forum Advertisement

01-06-2008, 07:07 PM	#2 (permalink)
carlosz Senior Member Join Date: Nov 2004 Posts: 107 Gallery: 0	I would get a second diagnosis, what where the simptoms which made this mechanic come to the conclussion of two dead cilynders? what is the running condition of the engine, overheated, not serviced, died running? how did he verify it? we need more info in order to give proper orientation as to what to do.

01-07-2008, 12:54 PM	#4 (permalink)
Supernatural Member Join Date: Jan 2008 Posts: 14 Gallery: 0	The engine has newer cylinder heads, and new radiator, less than 2 years old. (going from what my friend told me) It suddenly started running this way she said, very rough. She brought it to her mechanic, she said that he did a compression check, and it had 2 dead cylinders. It has new plugs, and spark from what she told me. Seems odd to me too.

01-07-2008, 01:59 PM	#6 (permalink)
TerryS Moderator Join Date: Aug 2004 Location: Bloomfield, CT If I died today, I lived there all my life. Posts: 2,062 Gallery: 0	Even when you come up with two no-compression cylinders, it does not automatically mean the engine has to be replaced. It may be severely carboned valves are stuck in the guides. Are the two adjacent, or no ? Even if you dropped a valve and it got punched stright thru the top of the piston, the liklyhood of it happening in 2 cylinders is remote. The easiest choice, if you took the easy route, is to replace a 4.2 with a 4.2, but rebuilding is easier yet.

01-07-2008, 02:46 PM	#7 (permalink)
p76rangie Ian Matthews Join Date: Jan 2006 Location: Melbourne Australia Posts: 1,960 Gallery: 0	Rover motors chew through cams. If the motor has done more than 60,000 miles, the cam would be worn. A compression test tells very little. Need to do a leak down test. That is, they pump air into the cylinder and listen to where it is escaping, eg through the valves, rings, etc.

01-07-2008, 07:37 PM	#8 (permalink)
carlosz Senior Member Join Date: Nov 2004 Posts: 107 Gallery: 0	I may suggest another mechanic, it seem rather fishy to me that one would diagnose engine replacement just because 2 cilynders seem to be dead. highly unlikely I would ask to investigate further to find a real reason, boy if I attempted to pull that at work I would be terminated almost inmediately. I dont mean to sound like an A..hole but its my opinion from your comment that some one wants to get the money they spent during the holidays from your friends pocket.

01-11-2008, 02:49 PM	#11 (permalink)
57loboy Senior Member Join Date: Sep 2007 Location: Newtown, CT Posts: 105 Gallery: 0	Well now - that's a good thing to find out! Glad it was that after our conversation the other night. Did you end up getting it for yourself? __________________ '95 RRC LWB, '05 Suburban Z71 (not stock), '94 F350 (only the cab shell & rear bumper is original), '62 International 404 tractor (red & white) & many other project cars in the past!

01-11-2008, 04:45 PM	#12 (permalink)
p76rangie Ian Matthews Join Date: Jan 2006 Location: Melbourne Australia Posts: 1,960 Gallery: 0	It always pay to get a second opinion when the answer doesn't sound right.

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

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
The Dead Duck	WCURoverD90	The Lounge	2	01-12-2007 10:17 AM
Im just curious what the dead girl was thinking......Before she died	WCURoverD90	The Lounge	7	08-01-2006 05:34 AM
Driving on four cylinders!	adcomp	Range Rover Classic	8	07-17-2006 11:44 PM
Dead Battery Doors Locked!	dj_cobb	Discovery Series II	20	12-16-2004 11:21 PM
Tach went dead...Alternator??	hamrendan	Range Rover Classic	1	12-08-2004 09:58 AM