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#1
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Checking compression through GP holes - fuel supply?
I have all the GP's out and I have the adapter etc. to check compression at the glow plug holes - do I need to do something with the fuel supply? Injectors and fuel lines are all in place. I have read thru old posts, but I'm still not sure what to do here...? Thanks.
ryan
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RG Newell 1984 300D 1972 250 1986 560SL 1991 300CE |
#2
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if you move the stop lever to the stop position, and wire it that way, no fuel will be wasted. prolly not absolutely necessary since no gloplugs are present to pose a starting danger.
by doing it this way, you can remove the hard lines if you want to make it easier on yourself. cover the IP w/ a clean rag if you do this.
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1984 123.193 372,xxx miles, room for Seven. 1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven. |
#3
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You can stop the fuel
Either way, with the hard lines on or off, it is nice to prevent fuel from entering the engine if they are on, or dripping over the engine compartment if they are off. If you use the junction box just forward of the battery, you can do an easy compression check all by your self, and since the ignition switch is in the off position, you should not have any fuel to contend with. People have difficulty locating that junction box, but it is just forward of the battery on top of the fender, has a cover to open from one end, and the little box is long but narrow. With a needle nose plier you can jump between two of the three screws to get the engine to crank. Try this jumping thing first, before the compression test to get a feel for it. Yes, you often see sparks fly. That is OK, and it is safe to do.
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Junqueyardjim Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis 1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA 2003 Jaguar Type X, AWD. beautiful, good mileage, Mom's car, but I won't let her drive it! |
#4
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The easiest way to get to the glow plugs is with the hard lines off so by all means take them off. If you have a super clean engine and don't won't any diesel fuel on it then wire the stop like it says in other post but I would just place rags around the pump as not much fuel will come out and I don't have fresh from the factory clean engine like Karags does.
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1977 300D Lost coolant while someone else was driving 1983 300D Can't run without oil 1985 300SD (gone but not forgotten) 1990 300TE 4matic Sold 1991 Yamaha Venture 1975 Kawsaki 250 triple 1974 Honda 200CL 1951 8N Ford 2008 Wildfire 650C |
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