1998 E300 suspect its glow plug time
I just bought a 98 E300. I put over 2500 miles on it already. I love it. It just started giving me trouble starting. If I wait longer before cranking it helps. I suspect it needs new plugs. It looks like the intake manifold needs to come off. I havnt got any books yet for it but can anyone tell me if manifold removal is straight forward or are the things I need to know ? Is glow plug removal as simple as it seems also ? I own and work on a Nissan SD33 diesel (for sale) and a 6.2 Chevy diesel but this is my first Mercedes so I would be gratefull for any tips
Scott |
Search "606 + siezed glow plug" and variants first..... search lots, learn lots, be careful and go slow.
There is a DIY above that describes the removal of the IM and an "uneventful" GP change. If you've got a bad GP or relay it ought to light up the GP light. If it is simply more difficult to start, it is more than likely a fuel/air leak. Define which. *edit* It would be helpful if you spelled it correctly first "SEIZED". ;) |
Thanks, will do. It is just simply harder to start. Air could well be the problem. will you get a glow plug light if a couple of plugs are inop ?
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sounds like you have an air leak.
Look at the clear palstic fuel lines while its running with a bright light and look for bubbles. Even lil ones. The trick is to identify in which line they first appear. The fuel path is as follows: from tank into fuel thermo in the cly head, then to top of pre-filter, out bottom of pre-filter to shutoff valve (SOV), out bottom of SOV to end of lift pump, out lift pump to main filter, out main filter to SOV and finally into IP. Detail http://www.detali.ru/cat/oem_mb2.asp?TP=1&F=210025&M=606%2E962&GA=722%2E608&CT=M&cat=19T&SID=07&SGR=120&SGN=04 Find which line has air and then look at the seal(S) prior to that point. Usually is prior to fuel exiting the lift pump as it is suction to that point. Check the Delivery valve seals on top of the IP too. Each line is sealed with an oring. Sizes are here http://www.peachparts.com/shopforum/diesel-discussion/177588-om606-962-o-ring-size.html or buy "viton" orings from fryerpower.com. The white horseshoe clips on the ends of the fuel lines are spreaders; push them tightly closed for removal, loosen them to seal. |
You should be able to check your glow plugs with an Ohmmeter without having to remove anything but the connector that goes to the Glow Plug wires at the. (The Diesel Giant site has a trouble shooting pictorial for 617 engines but enough of it is close enough to be helpful.)
http://i242.photobucket.com/albums/f...el911/ZZZ7.jpg Your Glow Plug Relay may look different but the connector on the left of the pic is for the Glow Plug Wires and they are numbered per cylinder. |
You can even use a test light between a 12v + source and the GP. If the GP is completely dead, you won't get a ground off of it.
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