Reaming Glow Plug Port - PeachParts Mercedes-Benz Forum

hangit · #1 02-05-2008, 05:23 PM

My glow plug reamer that I purchased from Diesel911 arrived and today I put it to use. Our 240D had become hard starting in the recent cold weather even with new GP's and the relay testing ok. I couldn't believe the carbon buildup that I reamed out! All 4 ports were difficult to get the reamer started. Before replacing the GPs, I cranked the engine a few times to blow out any carbon chunks.

After the carbon was removed, the car fired right up. It's only 35F today, so the real test will wait until the temp drops again.

If you're having cold weather starting problems, this might solve them.

John

Diesel911 · #2 02-05-2008, 09:03 PM

Perfect.

Jadavis · #3 02-05-2008, 09:24 PM

When I did mine on my 87 300D in October of 2006 I did not ream the holes. The car started much better after replacing the glow plugs, but that was because 5 of the 6 were dead. Just about anything would have been an improvment. They are starting to act up again already. I bet reaming really would have helped.

I have my new Diesel911 reamer now. I'll do it right this time!

-Jim

JimmyL · #4 02-05-2008, 10:58 PM

Mine arrived today and I am happy with the quality of the reamer. I can't see why, at his prices, we all don't have one soon.
Very nice!

hangit · #5 02-06-2008, 09:04 AM

Quote:

Originally Posted by JimmyL

Mine arrived today and I am happy with the quality of the reamer. I can't see why, at his prices, we all don't have one soon.
Very nice!

Ditto! A must have tool!

John

warmblood58 · #6 02-06-2008, 09:41 AM

I thought that changing gp's was enough - why reaming? Thanks

neumann · #7 02-06-2008, 09:46 AM

I hope to buy one today. I have pm'd Diesel 911

My 80 that I just put new gp's in sees alot of short trips and is probably loaded up. Any special instructions?

#8 02-06-2008, 09:47 AM

The reamer isn't a necessary tool, just one of those "nice to have" tools. Kind of like a drip timing tool or a spring compressor. It gets used once then stored in the tool box for ages.

Better to rent it from somebody than to buy it.

Jadavis · #9 02-06-2008, 09:51 AM

Diesel911 sells them for $20 including shipping.

Better to buy one and put it in the tool box.

-Jim

neumann · #10 02-06-2008, 09:56 AM

I don't mind spending $20 on a tool that I will always have. I have a few friends with 123's and I'll have the tool to "pay it forward"

#11 02-06-2008, 10:01 AM

They are also available on

eBay.

Nice to have, but not needed in most cases.

JimmyL · #12 02-06-2008, 10:04 AM

Quote:

Originally Posted by ForcedInduction

The reamer isn't a necessary tool, just one of those "nice to have" tools. Kind of like a drip timing tool or a rear wheel bearing socket. It gets used once then stored in the tool box for ages.

Better to rent it from somebody than to buy it.

It is necessary from the standpoint of needing to occasionally clear out the carbon that forms inside the prechamber. And a good quality tool for $20 bucks {including shipping} makes it a no brainer IMHO.
I will buy my reamer and borrow a spring compressor.......

Diesel911 · #13 02-07-2008, 03:13 AM

Unfortunately starting Monday 2-11-08 The price on the $20 reamer is going up to $24. Part of the reason is PayPal takes $1.28 and postage is around $1.47 (so far I have been able to scrounge mailing envelopes and have not had to buy any). $20 - $2.75 = $17.25 left to pay for the materials (the big headed bolt that I use is $0.75 each and only 1 hardware store in my area sells them) to make the reamer and how much profit??? So I increased the price $4 also to cover some of the expenses that I know about and the things that are not apparent like electricity to run the lathe that I do the drilling with and replacement of the other supplies that I use.

hey_allen · #14 02-07-2008, 06:26 AM

I picked up a reamer a little while back, but haven't gotten that far into the engine since.

Like it was suggested earlier, it's a cheap tool to have standing by for the times when you do have to change glow plugs, if for no other reason than to be sure that your plugs are working to their full capacity.

pimpernell · #15 02-07-2008, 09:37 AM

Quote:

Originally Posted by hey_allen

I picked up a reamer a little while back, but haven't gotten that far into the engine since.

Like it was suggested earlier, it's a cheap tool to have standing by for the times when you do have to change glow plugs, if for no other reason than to be sure that your plugs are working to their full capacity.

I would have to agree with you. I did all six plugs on my 96 e300d, and everyone of them was carbon bound. Took about a gallon of PB Blaster, and a lot of time to free them all up. After getting the plugs out, I had trouble even getting the reamer into the head because of the carbon buildup. If your going to go to all the trouble of getting the plugs out, you sure do not want to put new plugs into a carbon fouled plug hole.