Engine Flush - Diesel Motors, does it work?

Submitted: Sunday, Jan 06, 2008 at 21:58
ThreadID: 53190 Views:4548 Replies:6 FollowUps:2
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My 80 series cruiser is really sluggish, ( diesel, 205,000k).

Have seen advert in 4WD magazine for a product that 'flushes out' the gunk that diesel motors apparently build up, thus improving performance issues such as smoke, rough idle, power loss, and improving economy.

Has anyone used this (CEM Flushing Oil Concentrate) or similar product? Does it really work. Can it do damage to a motor?

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Reply By: Willem - Sunday, Jan 06, 2008 at 22:21

Sunday, Jan 06, 2008 at 22:21
Yes it works and it does not damage the engine

Do a Search of this site and you should find any number of threads on the subject
AnswerID: 280182

Reply By: Footloose - Sunday, Jan 06, 2008 at 22:50

Sunday, Jan 06, 2008 at 22:50
Depends what you mean by sluggish. Does it blow or use a lot of oil ? Has it had regular oil changes at 5000km ?
A cruiser should NOT need flushing at that sort of mileage.
Are you sure that you dont just need a good pump/injector service ?
AnswerID: 280189

Reply By: Cruiserman1961 (QLD) - Monday, Jan 07, 2008 at 06:47

Monday, Jan 07, 2008 at 06:47
a cruiser with 205000 k's is just run in and shouldn't need flushing yet. As long as you change the oil and filter every 5000 km's and use a good quality oil you will be right. Change aircleaner element and fuel filter first and see what happens. One problem you can run into when using CEM is that the motor starts weeping oil from places like the sump gasket or the rear engine seal. My cruiser has done over 500000 km's now and is running sweet. It has always being serviced on time and runs mainly long distance.
Good luck, Udo
AnswerID: 280217

Reply By: Member - Bucky (VIC) - Monday, Jan 07, 2008 at 08:57

Monday, Jan 07, 2008 at 08:57
Had your injectors looked at yet ?

Some thoughts are that every 100,000 km injectors should be done up, and changed if necessary.
But I would like to hear thoughts from other members on that one !

Cheers All

AnswerID: 280221

Follow Up By: Kev & Darkie - Monday, Jan 07, 2008 at 09:06

Monday, Jan 07, 2008 at 09:06

I have found that Darkie is a bit of a slug and likes to drink Diesel and blow black smoke and he has only done 83000 kms so he is now going to get the injectors and fuel pump done ASAP and before the turbo goes on.
He didn't do much work in the past 3-4 months so I don't know if that is an issue either.

Cheers Kev
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FollowupID: 544449

Reply By: Member - Ian H (NSW) - Monday, Jan 07, 2008 at 11:23

Monday, Jan 07, 2008 at 11:23
I have post about my results with CEM. It really works. Follow the instructions to the letter and you too will be amazed.
A 1HZ with 200k needs flushing, believe me.
Try it and report back to the forum.
AnswerID: 280241

Reply By: TerraFirma - Monday, Jan 07, 2008 at 12:15

Monday, Jan 07, 2008 at 12:15
I would consider the following works & CEM product treatments:

1. Injector Service & Inspection
2. If not servicing Injectors consider Injector Cleaner treatments
3. CEM FTC decarboniser treatment (De Coke and Carbon Engine)
4. CEM oil/engine flush to remove deposits/sludge build up

This is on top of ensuring your air filter and fuel filters are serviced regularly.
AnswerID: 280247

Follow Up By: psh - Monday, Jan 07, 2008 at 18:57

Monday, Jan 07, 2008 at 18:57
thanks all for you thoughts.

Vehicle has been serviced regularly so might try the injector service and inspection and will reassess from there.
FollowupID: 544522

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