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Somethin' else I found out !![240-260/'84 D24] posted by T. Tillman on
Tuesday, 23 June 1998, at 11:06 p.m.
I know, I know, nobody wants to hear 'bout them durned ol' diesels, but someone out there may need to know this'n sometime!
I have a seeping injector (not much, jus' a little) in #1 spot on my engine that I'm waiting on the right heat shield for so I can fix it. Where I park is on a slight slope. I have found out that when I park with the nose high, the car is harder'n you-know-where to start the next mornin'! Crank and crank and crank, etc. I put up with this for many weeks. Well, one night I accidentally parked her backside up and nose down. Next mornin' she started up like a new one! Parked her that way for four days, started fine. Parked her nose up (this ain't much of a slope, fellers! Only about 2 or 3 degrees at most!) and she wouldn't start. Did it back and forth several times and proved it out. Must be 'cause air gits in there somehow and makes her hard to start. I don't know what does it, but I DO know the results. I know, it's dumb, but it makes a lot of difference when you need to git on down the road!
Jus' thought some o' you diesel Volvo snappers might like to know! Might come in handy!
[Jus' in case you don't know, a snapper is what a bronc rider is called here in West Texas. When new stock gits broke, the cowboy will "snap out a few" (break 'em to the saddle). If y' done knowed that, then never mind!] Later, y'all!
--T. Tillman - Texas '84 245 D24 250k (as of 6.13.98)
Re: Somethin' else I found out !![240-260/'84 D24] posted by Dick Grinnell on
Thursday, 25 June 1998, at 1:06 a.m.
Your problem is caused by air getting in to the fuel lines through a loose connection. The diesel fuel lines consist of: A supply line from the tank to the fuel filter and on to the injection pump. This line is normally at less than one atmosphere as the injection pump is sucking fuel up from the tank. A loose connection on this line will not leak diesel fuel, but will allow air in and fuel in the injection pump and filter will siphon back into the tank.
The injection pump sends fuel to the injectors at about 1,800 psi. Some fuel is returned to the tank by little hoses going from injector to injector etc. Considerable fuel is also put into the return line by the injection pump. The injection pump is cooled by the constant circulation of fuel from the tank.
The return line is also usually at less than one atmosphere. The fuel returns to the tank by gravity. Any loose connection in the return lines will also allow air in and the fuel to gravity back to the tank.
The leakage you mention from the injector may be from a leaking return hose, and may be the cause of the starting problem. I would replace the return hoses between injectors first. The hoses and tiny clamps are available from VW parts stores.
Dick Grinnell
'85 740 GLE Turbo diesel
'86 VW Jetta diesel
'84 Suburban diesel
'85 Ford F350 diesel