Hard start
11-19-2011, 03:32 PM
#1
Newbie
Thread Starter
Join Date: Nov 2011
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
300d
Hard start
1983 300d, hard to start in temp. below 45, in warmer weather no problem. Glow plug light comes on as it should. Does this mean plugs are ok or could they still be the main issue. Thanks, Dave
11-19-2011, 09:56 PM
#2
MBWorld Fanatic!
With one glow plug out , starting becomes more difficult, especially in cold weather.
When it does start, does she miss on one cylinder for a few seconds?
Does it start more easily when you leave the glow plugs on for another 10 or more seconds before cranking.
Are you using the correct grade engine oil ?
When it does start, does she miss on one cylinder for a few seconds?
Does it start more easily when you leave the glow plugs on for another 10 or more seconds before cranking.
Are you using the correct grade engine oil ?
11-19-2011, 10:20 PM
#3
Newbie
Thread Starter
Join Date: Nov 2011
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
300d
Car does miss on one cylinder for a few seconds. Today I waited 20 seconds after the gp light went out and it did not seem to help. Not sure what grade of oil, because I just purchased the car. what oil and grade would you recommend?
11-20-2011, 01:22 AM
#4
MBWorld Fanatic!
Sounds as if it is one glow plug not operating to me .
I use diesel rated 15W40 for my older diesel. Other members may recommend a particular local brand.
I use diesel rated 15W40 for my older diesel. Other members may recommend a particular local brand.
11-20-2011, 01:26 AM
#5
MBWorld Fanatic!
Join Date: Jan 2007
Location: Sydney, Australia
Posts: 1,152
Likes: 0
Received 29 Likes
on
23 Posts
190D 2.5 (x2), 190E 2.6, W202 C240,W202 C43 (C55), W210 E55, W212 E250CDI
Before you start looking to far into it check all the valve clearences first, if they haven't been checked for a while they way be a bit tight.
The second place to check is the resistance of each of the glow plug, none should be open circuit, all should be less than 1ohm when cold.
The second place to check is the resistance of each of the glow plug, none should be open circuit, all should be less than 1ohm when cold.
11-21-2011, 08:12 AM
#7
MBWorld Fanatic!
In the tropics an oil of that sort would be fine but in winter...in most of North Anerica and Europe,at least...it would be foolish to use that.Better 5W..or even 0W...in truly cold weather.
