Outer Limits 4x4 Board

swapped out my glow plugs today and one of them is swelled up inside and i cant remove it, i can unscrew it all the way then it moves a bit but wont come out, any ideas on how to do it without pulling the head off?

Wozza244 wrote:swapped out my glow plugs today and one of them is swelled up inside and i cant remove it, i can unscrew it all the way then it moves a bit but wont come out, any ideas on how to do it without pulling the head off?

spoken with Brunswick?

bogged wrote:spoken with Brunswick?

Not yet, this sort of thing happens with any diesel engine when piss poor quality glow plugs have been installed.
Hoping it has happened to someone else so they could maybe shed some light on an easy extraction, if not it stops in there till i get around to pulling it off the road and whacking new heads on it. The job is on the list.

There is an ABSOLUTELY HUGE thread on Chev V8 diesels on the 4wd Action forum. Great for all kinds of info.

you could leave it there and just start on 7 cylinders, it will kick in after about 2 seconds.

DISCLAIMER: all care no responsibility - if you try this and it breaks, you're on your own.

unscrew it all the way then attach a cordless drill to the sticking out bit. give it a slow gentle spin and squirt some inox or similar down the hole and tug gently as you spin.

it will have some sooty deposits etc on it stopping the tip coming up through the quite narrow hole into the precombustion chamber.

I have used this method several times on japanese engines but never on a chev.

dumbdunce wrote:you could leave it there and just start on 7 cylinders, it will kick in after about 2 seconds.

DISCLAIMER: all care no responsibility - if you try this and it breaks, you're on your own.

unscrew it all the way then attach a cordless drill to the sticking out bit. give it a slow gentle spin and squirt some inox or similar down the hole and tug gently as you spin.

it will have some sooty deposits etc on it stopping the tip coming up through the quite narrow hole into the precombustion chamber.

I have used this method several times on japanese engines but never on a chev.

Yes, tried the inox, tried it hot, tried letting it cool, in the end i have decided to just leave it be, because if i break it off in the pre com chamber i will be major upset.

The heads are coming off at some stage of the year anyhow
Thanks for the help mate, appreciated.

Did you grease up the new ones before you put them in.

Cris

They had a lubricant on them from the factory so i assumed it was the correct stuff, felt like vaso

get a can of that freezing solution my local bolt shop sells it.. get the engine warm spray the plug and remove??

It is most likely melted from glowing too long ,quite common with low Volt glow plugs in the Chevs.... do you have a glow plug timer ..

If you are in a warm climate i would run off 7 plugs till you need to do head work

Leave that plug disconected...

ToyTruck wrote:It is most likely melted from glowing too long ,quite common with low Volt glow plugs in the Chevs.... do you have a glow plug timer ..

Yeah its got a timer, im just gonna leave it for the moment.

With it loose a good spray of carbi cleaher may melt the carbon if thats all it is.
If it has swollen then Dumbdances methos is the next best, failing that as you said just leave it in and let it start on the other ones. Only issue is if it goes open and they are wired in series parrallel.

Bazzle

didnt this motor have issues with glow plugs falling into the motor .. (read that it was an issue with hummers) ..

From memory , there is / was 2 different sets of glow plugs available .

1 set / type have a really LOW Voltage rating (my memory says it was something like 6 or 8 Volts)
I have no idea why , but i think it was to make them get hot real quick.
The down side was that if you glowed them manually OR incorrect timer setting , they would overheat and "mushroom" the head of the glow plug.

The other type (later model) was rated to 12 Volts and realistically you could run them all day long with out them failing / mushrooming.

I have heard of a few cases of "manual" glow plug setups that glowed them too long and melted / mushroomed all 8 :(

This is a common problem with chev V8 diesels, caused by either cheap glowplugs or usually the timer/operator has glowed them too long and they have swelled/burnt out.
There is a special tool which pulls them out every time, costs about $70 on ebay. See auction 140384688274 on ebay.com
I've used mine a couple of times but fiends have used it more ;-))
If you are intending to pull the heads in the near future then it will start fine with just seven glowplugs. The problem is though that as you "lose" glowplugs the available current to the rest increases increasing the chances of burning more out.
If you break a tip off in the cylinder when trying to extract one then just pull the glowplug out of that cylinder and suck the bits out with either a magnet or a vacuum cleaner.
Once you get the glowplug controller replaced they will last for years.

Thanks aain for the help, the glow plug removal tool looks the goods.