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Old 11-03-2014, 09:56 AM
DieselScout DieselScout is offline
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Default Rough Starting - Glow Plugs?

My '82 244 has been having more difficulty starting than it used to, and with winter coming, I would like to see about diagnosing this soon.

The glow plug light stays on for about 45s (No matter the temperature) before it goes out. + The car is taking longer to start than it used to (Even in warm weather)

It got worse recently when my injector line started leaking (currently looking to replace)

Are there any other potential reasons for the longer starting time?
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Old 11-03-2014, 11:28 AM
anders anders is offline
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It's pretty easy to check the first four glow plugs with a test light or multi meter, five and six little more more difficult, but doable. Check those first.
How is the fuel filter? Fuel supply lines in good shape And tight?
How many miles are on it?
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Old 11-03-2014, 08:26 PM
ngoma ngoma is offline
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See the sticky on hard starting for more ideas.
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Old 11-04-2014, 08:41 AM
DieselScout DieselScout is offline
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Just tested the glow plugs with a test light; all 6 look good.
The fuel filter was replaced this Summer and the valves were adjusted.

One fuel line is leaking.

Car has 194k miles.

Battery is at appx. 10v when glow plugs are on, is this OK?

Could this have anything to do with the fuel pump or injectors?
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Old 11-04-2014, 12:33 PM
ngoma ngoma is offline
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Unbolted the rear GP buss bar to check GPs #5 & 6 independently?

Battery strength? Starter? My starter had recently been going bad but gradually; it was hard to really notice the slower cranking speeds. Replaced the starter and Bang! Now it starts almost before I twist the key!

What is the battery voltage before energizing the GPs?

Injector line possibly a contributing factor-- how much is it leaking? From where?

Injection pump could also be a factor, esp. if the mainshaft seal leaks air into the IP while parked. Have a helper try to start it while you watch the transparent fuel line into the IP, watching for air bubbles.
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Old 11-09-2014, 04:54 AM
Volvoist Volvoist is offline
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Yes... You MUST test each plug independently. You may need a new realy(s) and/or temperature sensor in the back of the head. Also, do not run 15w40 (or thicker) oil in these engines. I, as does VW, recommends a 5w40 synthetic. 0w40 synthetic also works well. Thicker dino oil in these engines is not ideal. You will also notice a starting improvement, less (if any) need to adjust the valves, etc.
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d24, diesel, glow plugs, injector line, rough start

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