so i have newish glow plugs.
changed them in january.

its takes like 20 secs now for my glow plug light to go off.
maybe the relays is on its way out?

1982 300D

Brand of glow plugs?

Just for grins, ohm 'em.

__________________
83 SD

84 CD

.

maybe

but my bet is dirty circuitry inside of gp relay

.

__________________
w126 500SEC gen II euro, powered by OM617 turbo stolen from 84 300SD 2.88 diff,EGR blinded
next wish/project: w114 coupe OM603 powered

I have the newer relay,it stay on a while according to temperture

__________________
1999 w140, quit voting to old, and to old to fight, a god damned veteran

it was 75 here today.
so i thought the glow plug time should be short

If it's 75, you should only need five seconds or so.

Just go ahead and start the car whenever you feel like it. The light is not an indicator of how long the relay is actually on, just of when you can start the car. My recently installed used relay is doing the opposite. In -10 weather it stayed on for five seconds. Now it barely blinks on and off. But it's working fine so I just ignore it.

If you wait and listen (assuming minimal ambient noise in the area) you will hear the relay click off after about 30 secs. Or watch the dome light, it will flicker when the relay clicks off.

You did not answer what brand of GPs you installed. All of this is assuming you used Bosch.

__________________


Mac
2002 e320 4matic estate│1985 300d│1980 300td
Previous: 1979 & 1982 & 1983 300sd │ 1982 240d

“Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22

How's your battery?

\

thanks zaharias....yes bosch also would me not reaming out before i put the new glow plugs in impede my mpg performance..i still get crappy mileage i get like 15-16 mpg in the city...or is this normal...she's running like a dream now...still have to do the valve adjustment,,,not sure when it was done last.

The lack of reaming may impact the life of the glow plugs, but does not impact fuel economy.

For the low MPG figure, common suggestions would be caliper(s) sticking or a faulty odometer (can read fast OR slow).

If you travel a regular route, you might want to establish the actual miles and see if the odometer is actually registering them.

__________________


Mac
2002 e320 4matic estate│1985 300d│1980 300td
Previous: 1979 & 1982 & 1983 300sd │ 1982 240d

“Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22

good idea zach..my odometer quit working last week.
weeeeeeee

If you have a GPS, check your spedo against it.

Sounds like you need to remove the Speedometer and fix the slipping Pot Metal Gear. This is a common problem with these 123 Spedo`s.

How to Repair Your Broken Odometer

Where he shows using a Screw Driver to put marks in the shaft, I used a pair of 6" needle Nose Vice grips to put in some ridges in the shaft. Then the PM Gear will bite into them. I did not use Super Glue, Loc-Tite etc.... on the shaft afterwards.

I tried to use the tape to keep the gears aligned, after fighting with it I finally laid out each gear as it came off the shaft on a clean white towel. good time to clean the numbers etc... from years of dirt etc...

Don`t worry if the numbers don`t line up correctly, something I fought with one Spedo. slide them on, replace the brass bushing.
Above the numbers is the Grey Cogs. I filed off the flats on the left end of the shaft, pulled it out. then moved each number wheel where I wanted it, and placed the cogs back on. to keep the shaft on I used a piece of wire insulation smaller than the shaft, and pushed it on. been working fine for the past 4 years.




I agree the amount of time the GP Light stays on has no indication as to how long the GP`s are actually on.
You can hear the GP Relay clunk/click as it turns off or times out.

You can always go back in and ream out the GP holes, but not doing it does not mean the Carbon has built up around them to where it is touching the PLUG. It is how ever advisable to ream them out when you do replace them. You want everything to your favor when the engine is cold to have the most amount of heat from the plugs to get the engine to fire.

As mentioned before, carbon around the plugs can shorten their life.

Over tightening the 8mm Nuts can twist the center shaft and break the electrical connection inside the plug and shorten their life also.

Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

you should have an engine temperature sensor connected to the relay not certain which model you have so can't tell you where it is. That tells the relay how long to stay on for could be it's not working properly?

That is a very logical answer. I'll bet the temperature sensor wire is loose.

__________________
Respectfully,
/s/
M. Dillon
'87 124.193 (300TD) "White Whale", ~392k miles, 3.5l IP fitted
'95 124.131 (E300) "Sapphire", 380k miles
'73 Balboa 20 "Sanctification"
Charleston SC

There is no such wire on a 1982 300D. The temp sensor is inside the timer assembly.

The light is a completely artificial indication. Be happy it comes on and don't worry about how long it stays on.

__________________
When cryptography is outlawed, bayl bhgynjf jvyy unir cevinpl.