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#1
10-12-2013, 02:35 PM
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OM603 glow plug change
It's about time to change the glow plugs in my very dependable 350SDL. Access is tough.
Does anyone have any SERIOUS suggestions on ways to make OM603 glow plug service easier? I am not looking for snarky-a$$ answers like "Have someone else do it." Thank you I have been advised that long 1/4"drive extensions are the easiest way, and one person has sent me a note suggesting change from underneath, which I don't consider easier. Comments from the tech side welcome. Thanks
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Strelnik Invest in America: Buy a Congressman! 1950 170SD 1951 Citroen 11BN 1953 Citroen 11BNF limo 1953 220a project 1959 180D 1960 190D 1960 Borgward Isabella TS 2dr 1983 240D daily driver 1983 380SL 1990 350SDL daily driver alt 3 x Citroen DS21M, down from 5 3 x Citroen 2CV, down from 6 
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#2
10-12-2013, 02:38 PM
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If you're not removing the intake manifold, at least remove the cruise control actuator. It takes some dexterity to reconnect the IP links with access between manifold runners so get yourself some very long nose pliers or beefy hemostats.
Sixto 87 300D
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#3
10-12-2013, 03:00 PM
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Quote:
__________________
Strelnik Invest in America: Buy a Congressman! 1950 170SD 1951 Citroen 11BN 1953 Citroen 11BNF limo 1953 220a project 1959 180D 1960 190D 1960 Borgward Isabella TS 2dr 1983 240D daily driver 1983 380SL 1990 350SDL daily driver alt 3 x Citroen DS21M, down from 5 3 x Citroen 2CV, down from 6
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#4
10-12-2013, 03:04 PM
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It's a time and effort thing. I can probably replace all glow plugs without removing anything but I find it quicker overall to pull the cruise actuator. Maybe if I had longer fingers or ball-and-socket knuckles ...
Sixto 87 300D
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#5
10-12-2013, 03:19 PM
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Quote:
I need also to talk to someone about 126 vacuum problems and troubleshooting them, but one thing at a time. Thanks!
__________________
Strelnik Invest in America: Buy a Congressman! 1950 170SD 1951 Citroen 11BN 1953 Citroen 11BNF limo 1953 220a project 1959 180D 1960 190D 1960 Borgward Isabella TS 2dr 1983 240D daily driver 1983 380SL 1990 350SDL daily driver alt 3 x Citroen DS21M, down from 5 3 x Citroen 2CV, down from 6
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#6
10-12-2013, 09:04 PM
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A friend did mine while I was out of town. He left everything in place. He said the biggest trick to it was 1/4" extensions and a Universal Joint.
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1987 300SDL #1, 1987 300SDL #2, 1980 240D, 1982 300SD, 1994 S350, 1990 350SDL, 1991 350SD, 1985 300D, 2005 E320CDI Gone, but not forgotten: 1981 300SD, 1982 300SD, 1987 300SDL, 1983 300TD, 1980 300CD, 1981 300SD #2, 1987 300D, 1987 300TDT, 1980 300D
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#7
10-13-2013, 05:10 PM
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For me it's worth it to remove the intake manifold.
It does not take long. It's good to replace those gaskets once in a great while. And, with plenty of room ( with the intake out of the way) you can be sure that you get the new plugs installed properly. And the wires back on correct.
__________________
87' 300DT (Grey w/ red leather) 87' 300TDT (silver w/ palamino tex) SOLD 2012 VW JSW TDI (on tdiclub.com all the time "btcost")
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#9
10-14-2013, 07:31 AM
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I just finished my TD last night. with the injector lines still in place, but pulled the IM... STILL a pain... I cannot imagine doing it with IM still in place.
plus if you are pulling the plugs, you should be reaming the holes... blowing out the carbon. bite the bullet, pull the IM. you're going to need a GOOD long 6mm allen key socket, and one with a ball end, and a lot of patience. also, the crossover gasket and IM gasket. a gasket scraper is also likely going to be needed. GENTLY, that head aluminum is soft!
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!!  1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! Last edited by vstech; 10-14-2013 at 10:55 AM. Reason: Doh! IM, not IP!!!
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#10
10-14-2013, 07:37 AM
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I STRONGLY recommend you have a helper with a magnetic, CLAW to assist holding the bolts, as you remove them, to keep them from falling into the abiss...
I have one like this, with a magnet, and an led inside... wonderful tool 24" 2-in-1 Pickup Tool
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#11
10-14-2013, 09:23 AM
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Quote:
Thanks for all the input. I think we'll start by removing the speed control and see if removal of the intake manifold is necessary too. Thanks for the good advice!
__________________
Strelnik Invest in America: Buy a Congressman! 1950 170SD 1951 Citroen 11BN 1953 Citroen 11BNF limo 1953 220a project 1959 180D 1960 190D 1960 Borgward Isabella TS 2dr 1983 240D daily driver 1983 380SL 1990 350SDL daily driver alt 3 x Citroen DS21M, down from 5 3 x Citroen 2CV, down from 6
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#12
10-14-2013, 09:30 AM
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I've found the amount of time I spend coming up with extensions or creative ways to get to the glow plugs, I could have just had the intake off and been done with the whole job long before.
Like Brian said the gasket probably hasn't been done in forever, and its a good chance to clean some carbon out of the runners.
__________________
68 280SL - 70 280SL - 70 300SEL 3.5 - 72 350SL - 72 280SEL 4.5 - 72 220 - 72 220D - 73 450SL - 84 230GE - 87 200TD - 90 190E 2.0 - 03 G500 Nissan GTR - Nissan Skyline GTS25T - Toyota GTFour - Rover Mini - Toyota Land Cruiser HJ60 - Cadillac Eldorado - BMW E30 - BMW 135i
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#13
10-14-2013, 10:52 AM
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Above vstech wrote to pull the IP. I think he meant IM.
__________________
1968 220D, w115, /8, OM615, Automatic transmission. My 1987 300TD wagon was sold and my 2003 W210 E320 wagon was totaled (sheds tear).
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#14
10-14-2013, 10:56 AM
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Quote:
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#15
10-14-2013, 10:11 PM
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Remove intake is the easiest way. I'd invest in some good hex head sockets. I bought a set of long hex head sockets but did not get a chance to use it. I reused my old gaskets because I didn't need the car to run the next day
if I ripped one so I gambled. I have a set sitting in the garage in case I have to yank the intake again. I'd highly recommend replacing the shut off valved if you have not done so already as it's an opportune time to do so. Did my glow plugs and 3 weeks later the shut off valve died. 
Last edited by vstech; 10-15-2013 at 08:23 AM.
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