Injector Removal...searched and ?

[morgoon]

Ok I just got my Bentley in the mail BTW

Question: re 1.6NA core motor injector removal

So I searched and read for a while on here too under "injector removal" "stuck injector"etc.

3 out of 4 injectors came out of the head with a great amount of patience

The one up by the timing belt, refuses to budge...Using 1/2 drive johnson bar and I just made a 31” Tbar to even the torque I applied, and I cannot budge the thing with all my might….

I have put a fair amount of effort into removing it, and tightening it...repeatedly over the last couple of hours off and on... I tapped on the injector covered in “plusgas” with a punch and hammer to try and send vibes down to break the bond

The amount of effort required is moving beyond my comfort level, and I would hate to crack the head at this point.

I have been marinating the injectors and other bits in this stuff call Plusgas for days and days before hand...works awesome so far


Most of the info I found I had been doing

Can I put some heat on it? ie oxy/propane…?

I guess this would make the injector DOA ..if it is not already

I did read where someone said I could use an impact a little forward/back and so on…?

This makes me nervous…not sure if I want to attempt that

I am willing to try cans of spinnach, but I don't want to crack the head (someone was bound to say it )

[theman53]

I wouldn't use the impact, but that is just me. I would heat it and pour somemore of your penatrant to it, heat and repeat about 3-5 times. Then break out the spinnach. I wouldn't heat it until it melted, but it should know you mean business.

[morgoon]

Well I got frustrated...and quit

Just in time probably

I did use my impact for a bit just a few bumps in each direction....

Hoping I put some good vibes down into the thread...I hope not too much

I had my air set low...real low...

Gonna switch to heat now...

We'll see how that goes

[morgoon]

Well now I am running in and out of the house looking for answers

I put some heat to it, 3 times with no luck...not tons of heat, but lots

I tried to move the torch all around

It doesn't look cross threaded....

it was enough heat to have the diesel inside the injector light up

So now I soaked it again in penatrant...and I will have another go at it tomorrow....perhaps tonight

I am walking away for a bit before I break something

[Mark(The Miser)UK]

If it turns  just a fraction then you can shuffle some lubricant down the threads over time.

Just had an inspiration, which may or may not work, try using some hydrogen peroxide. It should fizz the carbon out.

Kerosine might be fine enough.

If you can get the foam to reach the blockage, Foam oven cleaner will melt the deposit away...

[Mark(The Miser)UK]

Try some compressed co2, and shrink the injector before trying the T bar

[Runt]

Easy on the oven cleaner, bases (lye) and aluminum dont get along too well.
You need to heat the head, not the injector.  Try to get lots of heat onto the head, but keep it moving so that you heat a larger area slowly, not one area all at once.  Then try to spray a little lube right at te base of the injector so that it cools te injector as it wicks down the threads.  The peroxide sounds like it might work, slowly, but I tink it would probably work better with the head off to fill the prechamber and let it dissolve the carbon down from that side.  The heat, and patience in applying it, should work for you eventually.

[morgoon]

Ahhh well I was scared to over heat the aluminum

So I will go and try that

I have CO2 for my mig....hmmm but I don't think my regulator will put it out at an appreciable volume

So I shall try using 2 things

Patience

and

More of this place

Thanks all

[morgoon]

Apparently I haven't walked away quite yet

I put some heat to the aluminum x2...not sure how long I should heat it?

2min...3...4..5?

and I slammed some more penatrant on there

I will try the peroxide

I guess I better let the whole thing sit overnight

I am getting too rammy..me thinks

Don't know if air temp has anything to do with it but it is just above freezing here today and when I got the other injectors out it was 15-20 Celcius

[Smokey Eddy]

You want the head to be warmer than the injector. Even a few degrees should do it.
for the love of god don't melt the head.
Get a can of "compressed air" for cleaning computers. Turn it upside down and spray the compressed liquid out. it will be dang cold.
get that all over the injector and heat the head.

Good luck.

also, WD-40 has a reputation for saving my buns.

[morgoon]

"for the love of god don't melt the head."


No head melting antics here 

I kept the torch moving pretty well...I was conscious that there is such a thing as too much heat

I am letting it sit overnight and I will try again with a fresh perspective

[GTD.]

Plus gas is far supirior to Wd-40, my grandad was an engineer in ICI and swore by it, he ordered it by the drum

[morgoon]

Smokey Eddy sent me a PM describing in detail about pushing towards the head

I had been doing that thank goodness...I actually read that one here somewhere

In regards to using a torch...I kept things pretty cool...I did know that it doesn't take a ton of heat to get the job done.

My 2-3-4 min thing was about trying to heat the corner of the head somewhat..slowly to bring a larger area up to temp without localizing the heat

I am sure my description did not really convey this

I have played around with my torches and overheated aluminum parts for fun before

And I finally just grew a set and put some spinach into it....

The injectorr has moved just a tich, and I have been working it slowly back and forth

It is still not easy to turn but we keep Plusgassin' it

Thank goodness it is dark out now..it can sit overnight

[Runt]

Keep it steady, and you'll get it now. 

[fatmobile]

Glad to hear it's moving.
 I've heard people swear by heating the threads and letting wax wick into them.
Libbybapa has a tale about pulling all the aluminum threads out with the injector, due to carbon build-up.
 When I have something that won't loosen, I heat it, then spray water on it,.. to crush the junction between the parts.
Get everything heated up then spray the aluminum around the injector.