Mercedes-Benz Forum banner

Status
Not open for further replies.
1 - 7 of 7 Posts

·
Registered
Joined
·
0 Posts
Discussion Starter #1
My 81 240D smokes heavy during cold start and plan to clean my injectors. Please advise how to do it for I can't afford to pay a mechanic. Thanks.
 

·
Registered
Joined
·
0 Posts
Discussion Starter #2
1- Heavy smoke at a cold start is usually a bad glow plug, often accompanied by rough idle for the first 10-30 seconds. Check your glow plugs with an ohm meter, at the relay, with the harness disconnected. Each terminal at the connector (to ground) should be 0.6 ohms, or at least less than 1 or 2 ohms. Anything higher indicates a bad glow plug. <br> <br> <br> 2- If the glow plugs are all OK, you can disassemble & clean the injectors. A diesel shop will probably charge $75-$100 to do this for you, as well as set them all to the correct opening pressure ('pop' pressure) with internal shims. I'd recommend pulling them out of the engine yourself, but having a pro diesel shop actually disassemble & clean the injectors. If you still want to do it, there is a procedure in the MB service manual with pictures that explains how. If you don't have the manual, try to buy one, it's worth its weight in gold for a DIY mechanic...<br> <br> <br> HTH,
 

·
Registered
Joined
·
0 Posts
Discussion Starter #3
im looking for a wagon

hey guys, i recently wrecked my parents 300TD. Now to show my 'resposibility' i need to replace it. The engine and transmission in the wrecked vehicle are still in great condition and i was hoping that i could find a wagon which needed these components. if u have any ideas or advice on how to find what im looking for(like websites or contacts that u have, etc) please let me know. im new at this website and am not really sure how it works so if u could email me a [email protected] i would really appreciate it.<br>
thanks
 

·
Registered
Joined
·
0 Posts
Discussion Starter #5
b4 u go the route of r+r of injectors change<br>
your fuel filters and then see what happens<br>
then make sure ur valves are adjusted properly<br>
assume you've tried diesel additives/cleaners<br>
already?<br>
 

·
Registered
Joined
·
0 Posts
Discussion Starter #7
For a one-time cleaning, try LubraMoly Diesel Purge. It requires disconnecting fuel lines and running the engine for 15-20 minutes off the stuff directly - it does NOT just dump in your tank. It's about $6/can from Wholesale Parts (800-741-5252).<br> <br> For regular in-tank use, I add either RedLine 85+ or PowerService Diesel Kleen (about 1/4 bottle per tank). Let the tank get very low, pour in the additive, then fill up - this mixes it better than adding to a full tank.<br> <br> I've heard good things about BG 44K (did I spell that right?) but it's VERY expensive ($15-20), and no better than the stuff above AFAICT.<br> <br> <br> On a good running diesel engine, you don't normally need to add cleaner on a regular basis. Diesel parts don't normally get gummed up like gasoline parts do. If your engine runs smooth now don't expect much, if any, difference after using cleaner.<br> <br> <br> HTH,
 
1 - 7 of 7 Posts
Status
Not open for further replies.
Top