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Search: Posts Made By: scout
Forum: Engine Performance/Intake/Exhaust 08-20-2010, 05:48 AM
Replies: 16
Views: 2,823
Posted By scout
Re: 4.7 HO wan't run urgent advise needed

Thanks Frango, I have check all of the TB's but they do not show any info on 4.7L HO valve seats, could there be other TB's. They also do not show Blend Doors, Seat Heaters or CD stackers in the 2002...
Forum: Engine Performance/Intake/Exhaust 08-18-2010, 05:18 AM
Replies: 16
Views: 2,823
Posted By scout
Re: 4.7 HO wan't run urgent advise needed

Just though I would bring everyone upto date with what is going on, yes still. The head was removed and a valve seat had dropped holding the piston open. This was replaced and the head refitted, 3 K...
Forum: Engine Performance/Intake/Exhaust 07-09-2010, 08:51 AM
Replies: 3
Views: 660
Posted By scout
Info re: WJ 4.7 HO engine

Could someone advise what is the difference between the Knock Sensors and the Detonation Sensor in the HO engine? What do they do or control?

Thanks Trev
Forum: Engine Performance/Intake/Exhaust 06-13-2010, 04:04 PM
Replies: 3
Views: 1,682
Posted By scout
Re: Valve Problem with the HO engine

As mentioned the valve is bent and/or valve seat dropped, therefore the lifter is off the valve. Don't know about cylinder damage as the head has not been removed. Trying to sort possible parts...
Forum: Engine Performance/Intake/Exhaust 06-12-2010, 06:39 PM
Replies: 3
Views: 1,682
Posted By scout
Re: Valve Problem with the HO engine

ZERO compression and the valve is not seating that is clearly visible in the photo.
Forum: Engine Performance/Intake/Exhaust 06-12-2010, 07:29 AM
Replies: 3
Views: 1,682
Posted By scout
Valve Problem with the HO engine

How common is it to have Valve problems with the HO engine. Mine has about 120K on the clock and after chasing electrical problems and importing a new PCM from Germany it appears that there is a bent...
Forum: Engine Performance/Intake/Exhaust 05-28-2010, 05:15 AM
Replies: 16
Views: 2,823
Posted By scout
Re: 4.7 HO wan't run urgent advise needed

Thanks for the info there is some interesting comments. These new high tech engines certainly have some problems.
Forum: Engine Performance/Intake/Exhaust 05-27-2010, 08:34 AM
Replies: 16
Views: 2,823
Posted By scout
Re: 4.7 HO wan't run urgent advise needed

I will check the lifters if the head does need to come off. But I do not follow the AC belt could you explain the potential problem there.
Forum: Engine Performance/Intake/Exhaust 05-27-2010, 03:31 AM
Replies: 16
Views: 2,823
Posted By scout
Re: 4.7 HO wan't run urgent advise needed

The dealer managed to get the new PCM to accept my chassis number and it runs, however, he says there is still a miss there somewhere. I will go over tomorrow and have a listen to see first hand...
Forum: Engine Performance/Intake/Exhaust 05-26-2010, 04:24 PM
Replies: 16
Views: 2,823
Posted By scout
Re: 4.7 HO wan't run urgent advise needed

It will not run with the old PCM it just has a massive miss. This happened with no warning and the it apears to be all over the engine, very erratic. I do not know what the code was the dealer read...
Forum: Engine Performance/Intake/Exhaust 05-26-2010, 08:22 AM
Replies: 16
Views: 2,823
Posted By scout
4.7 HO wan't run urgent advise needed

Hi all, A new member form Australia. My 4.7 HO has developed a bad miss. Whole story> On a recent trip I stopped for a coffee, about 30 minutes later tryed to start and it coughed and did not start,...
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