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CATEGORY LISTINGS > MAINTENANCE / SERVICE > Glazed bores - is there a 'quick' fix?

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Thread Title:

Glazed bores - is there a 'quick' fix?

Created On Sunday February 09, 2003 08:26

Richie

Posts: 11
Joined: Feb 2003

Sunday February 09, 2003 08:26

I have a 6354 perkins with only about 40,000ks on the clock.

In a fire truck water tanker, it spent a lot of time idling (a quick way to glaze bores) and has had one full rebuild in it's life already because 'it was a bit smoky.'

It seems now to exhibiting symptoms of glazed bores again -
- blowby and oil coming out the breather
- too much oil smoke in the exhaust

The compresson is good, and seeing as how the engine is so fresh, I'm reluctant to go pulling it to bits to re-hone it.

I've been told by some people throwing a handful of laundry detergent powder in the air intake, running it for a few (how many?) munites can help. Changing the oil after of course.

I've also been told there is some aftermarket oil additive that can help, but don't know what it is.

Has anyone else had this problem and found a simple compromise?

cheers,

Richie
Brisbane, Australia

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badges65

Posts: 132
Joined: Jul 2002

Sunday February 09, 2003 16:07

Hi,
i think you would be asking for trouble with those quickies!!!!!!
you could try and locate Militec=1 or Synergyn either one may give you something but have no personal experience with them both have web sites so look them up and check out their statements of their products.
Militec=1 is available in Australia
don

-------------------------
http://invertedvboats.741.com/

Edited: Sunday February 09, 2003 at 16:09 by badges65

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tailfeather

Posts: 2
Joined: Feb 2003

Wednesday February 12, 2003 21:42
have the injecters tested, check air filter

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Richie

Posts: 11
Joined: Feb 2003

Monday February 17, 2003 07:28

Injectors have been tested recently and are fine.

Air filter indicator seems ok...

Would an air filter in need of changing have this effect though?

ie : plenty of smoke and oil out ther breather.

When I put my finger over the breather outlet, there is enough pressure in the crankcase to make oil come out the dipstick hole...

To Don - thanks for the advice on products. I'll take a look at the specs to see if they might help.

BTW, I know you say you have no experiance with these, but what's the reasoning behind your suggestion?

cheers,

Richard Allen
Brisbane, Australia

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BEDFORDMAN

Posts: 15
Joined: Oct 2002

Monday February 17, 2003 08:57

Richie,
The crankcase pressure is definately glazed bores.I wonder if a sump full of bedding in oil or additive plus a damn good couple of hours wide open running would clear it.Make sure the engine is working,take in a few hills etc.As its a fire truck load up with water before you go to give the engine something to pull.
Ultimately i think the only cure is to strip it down and have the bores honed and new rings fitted,it all depends on whether you can put up with the crankcase pressure and how much use the vehicle gets.
Check that crankcase breather pipes,ie to air filter are clear.

Regards,
Andy.

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flyboy

Posts: 10
Joined: Nov 2002

Tuesday February 25, 2003 18:16

I have used this procedure before , both on a new engine and low time units. Get some Bon-Ami or something like it. This is similar to a very fine scouring powder.
It is best to remove the intake manifold. Run the engine around 1500- 2000 RPM. Put a teaspoon or so in the palm of your hand and hold it close enough to the intake port so as to let it gradually be drawn into the cylinder. Repeat this for each cylinder. You may have to repeat the sequence. This may solve your problem. I would then work it hard for several miles loaded.
Gary

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busybart3

Posts: 31
Joined: Jul 2003

Thursday July 24, 2003 14:25

Richie,The BonAmi trick may be the best out there.Do not put in any laundry detergent.That could possibly cause some real trouble.Another trick might be to use automatic trans fluid,installed in the similar way as the bonami,but you really don't have to pull the intake off.ATF will burn as a fuel so be very careful as not to put to much in at a time.Run the engine as mentioned in the bonami letter.

It is really possible that you just might have to pull the engine down.Base ideling is horrible on any engine.If the liners did not get the proper lubrication,as they tend not to at idle,they will wear prematurly and cause the trouble your talking about.Hope this helps.Jim

Edited: Thursday July 24, 2003 at 14:31 by busybart3

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Richie

Posts: 11
Joined: Feb 2003

Monday August 04, 2003 07:18

Thanks for all your advice lads -

Just returned from a 3000k trip pretty well loaded with no improvement.

Next will try products - probably FTC decarbonizer http://www.costeffective.com.au/ftcd.htm - it apparently contains a catalyst reducing the burning temp of carbon and glaze so they burn with the fuel...

If this fails - it's honing re-ringing time.

On the subject of honing, if I can remove the sump, crank and pistons from below, is there any need to remove the head to hone it? FYI it's a 6.354 Perkins.

cheers,

Richie

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Posts: 1
Joined: Dec 2003

Friday December 12, 2003 19:17
Richie, I am wondering how you got on with the FTC decarbonizer. Did it do the trick? I am thin king about trying it in my Volvo 200s which blow a lot of blue smoke esp at styart up. Colin

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