Topic: Momo`s kj engine (Read 10406 times)

momos · « **on:** January 23, 2009, 05:33:59 PM »

Hi All
I was meant to pick car up today but they are not happy with it.
The big knocking noise has gone now it has new shelves but there is another knocking noise which he thinks is carbon on the back of the valves.
He said that the cylinder head would have to come off to check valves, does this mean the engine will have to come out?
Does coking up happen to newer engines?
Thanks!

Bubba · « **Reply #1 on:** January 23, 2009, 05:36:06 PM »

not in my experiance

Dutch · « **Reply #2 on:** January 23, 2009, 05:38:57 PM »

Hi Sarah.....you must be close to throwing it all in by now....!!

momos · « **Reply #3 on:** January 23, 2009, 05:48:57 PM »

I wont, by hook or by knife I will resolve it on monday
more waiting

tim_aka_tim · « **Reply #4 on:** January 23, 2009, 06:20:14 PM »

Problem on a v6 is that it has two cylinder heads. Good news is that it's not usually an engine out job. If it is coked up, then you have to start pointing the finger at the lpg system.

Mike Pavelin · « **Reply #5 on:** January 23, 2009, 06:30:10 PM »

Fiddly buggers to get off on a V6 KJ.

Panic mechanic! · « **Reply #6 on:** January 23, 2009, 07:19:26 PM »

lpg doesn't cause coking up, its actually a lot nicer fuel to run a vehicle on , it doesn't blacken the oil either if is regularly maintained. what can happen are valve seats burn out , this is because some engines need a flash lube, to lubricate the valve seats, this only tends to happen on older engines , which were designed in pre-lead free era,America has been running lead free for years so dealt with fitting vehicles with hardened valve seats a long time ago.
so I wouldn't point the first finger at the lpg system.

momos · « **Reply #7 on:** January 23, 2009, 07:38:33 PM »

Hi, yeah someone gave me an article about the valve seats, i will definatley mention it on monday...can`t wait to get it back.
Where`s the talky box?

Panic mechanic! · « **Reply #8 on:** January 23, 2009, 07:39:59 PM »

its on version 15, tim is going for the perfect solution as we all do :-D

scrw · « **Reply #9 on:** January 23, 2009, 08:17:25 PM »

Did they just change the crank bearing shells or do the big end shells aswell?
What else did they do?

momos · « **Reply #10 on:** January 23, 2009, 08:18:09 PM »

version 15! blimey, still not as bad as Microsoft!
hehe

MOCAJ · « **Reply #11 on:** January 23, 2009, 08:21:09 PM »

Hello,

you got a busted Jeep and your worried about the chat box :shock:

momos · « **Reply #12 on:** January 23, 2009, 08:23:55 PM »

haha, yeah I know
big end shelves? not sure, so much talking and not enough taking in.....

scrw · « **Reply #13 on:** January 23, 2009, 08:30:44 PM »

Shells not shelves

here are some being fitted (crank ones on a BFO engine)

big end ones are on the conecting rods..

Bubba · « **Reply #14 on:** January 23, 2009, 08:33:50 PM »

i think they wrongly diagnosed and now i smell mucho ass covering

scrw · « **Reply #15 on:** January 23, 2009, 08:36:19 PM »

me thinking they ain't done the big ends at the same time

momos · « **Reply #16 on:** January 23, 2009, 08:43:56 PM »

now they did say to get to the conrods the engine will have to come out.

Well, its that time. Time for beers and wishing for monday. Deja vous me thinks

scrw · « **Reply #17 on:** January 23, 2009, 08:51:18 PM »

You can sometimes do the big end shells with the pistons still in, don't know with a KJ v6 tho

Bishops Finger · « **Reply #18 on:** January 23, 2009, 09:34:42 PM »

Jeep dealer asscovering...no that doesnt happen.... :evil:

daggie · « **Reply #19 on:** January 24, 2009, 04:56:47 PM »

I'm with Stew,the non techy :roll:

tim_aka_tim · « **Reply #20 on:** January 24, 2009, 05:35:05 PM »

Quote from: "daggie"

I'm with Stew,the non techy :roll:

I wouldn't put it quite so eloquently, but I agree.

dxmedia · « **Reply #21 on:** January 24, 2009, 09:21:48 PM »

I'd personally get the car out of that garage pronto.

Carbon build up on the back of the valves??

BS.

What makes them think that, do they have a 'carbon build up on the back of valves' meter? If there's a top end rattle then that's going to possibly be cam related, if there's low compression in a cylinder then it could be valves or seat or a head problem, or if they know how to use a compression tester than possibly rings, bores...

To say, oo you've a problem specifically with 'x' when your using a fuel which produces very very little carbon, I call BS.

momos · « **Reply #22 on:** January 26, 2009, 12:07:35 PM »

Hi All,
Just got back from dealers, and they need to take it apart to find out what the second knocking is. I made a video, not sure if I can get it on here, but can email it, if it would help...
Dad thinks it could be valve gears, lpg is NOT blame, the bearings were absolutley shot. The shells were peeled right back, split and broke, there was alot of fine shit in the sump, which could have been sucked up into the engine...so I`m not really any the wiser.
He is taking 2 hours to get to the cam cover and investigate further £160
laters

scrw · « **Reply #23 on:** January 26, 2009, 02:16:28 PM »

stop spending, get a replacement engine asap. if it has had an oiling problem you will be chasing problems & spending big £

tim_aka_tim · « **Reply #24 on:** January 26, 2009, 02:17:29 PM »

What he said. You're flushing your money down the shitter. You'll be repairing that engine for evermore.

Author Topic: Momo`s kj engine (Read 10406 times)

momos

momos

Mike Pavelin

Panic mechanic!

momos

Panic mechanic!

scrw

momos

momos

scrw

scrw

momos

scrw

Bishops Finger

dxmedia

momos

scrw