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Car Forum / Ford / Ford Trucks / June 2005Used Ford Diesel - What to Check?
We're looking at a 1992 F250 with a diesel engine. Is there anything in particular we should be aware of with this engine? Any particular tests that are not ordinarily done on gas engines? Any other advice? Thanks in advance, Tony Marylyn DeGregorio marylyn@smokeyjoe.net Marylyn DeGregorio marylyn@smokeyjoe.net >We’re looking at a 1992 F250 with a diesel engine. Is there >anything [quoted text clipped - 7 lines] >Marylyn DeGregorio >marylyn@smokeyjoe.net Maintance records for starters. miles on it and how it generally runs. The old 6.9 was a pretty sturdy engine though a bit weak in performance it was reliable. > >We're looking at a 1992 F250 with a diesel engine. Is there > >anything [quoted text clipped - 11 lines] > The old 6.9 was a pretty sturdy engine though a bit weak in > performance it was reliable. The 6.9 was also a fuel hog. Suggest you look at vehicles of at least 1994 model vintage. There, you at least can choose from naturally aspirated, IDI turboed or DI PowerStroke. This is 7.3 NA with 104K miles. Looks goood in and out but heard about problems with the engine block of some diesels, pin holes that develop that in turn cause major engine problems. Any comments on this and what to look for(oil discolor, antifreeze?) Thanks for any help. Tony >> >We're looking at a 1992 F250 with a diesel engine. Is there >> >anything [quoted text clipped - 15 lines] >1994 model vintage. There, you at least can choose from naturally >aspirated, IDI turboed or DI PowerStroke. Marylyn DeGregorio marylyn@smokeyjoe.net On Fri, 24 Jun 2005 07:31:07 -0400, in alt.trucks.ford you wrote: >This is 7.3 NA with 104K miles. Looks goood in and out but heard >about problems with the engine block of some diesels, pin holes that >develop that in turn cause major engine problems. Any comments on >this and what to look for(oil discolor, antifreeze?) > >Thanks for any help. Get a fleetguard coolant test strip and test the coolant. A good reading on sca (dca4 or fw16 as Ford calls it) doesn't guarantee the level was always kept up, but at least you know somebody put some in it at some time. If you can't find the strips, you can get the here: www.dieselpage.com. > This is 7.3 NA with 104K miles. Looks goood in and out but heard > about problems with the engine block of some diesels, pin holes that [quoted text clipped - 4 lines] > > Tony The pin holes are caused by cavitation. The cylinder walls flex as the engine is running. As cylinder pressure reduces, the wall moves quickly inward. So fast in fact that, small bubbles are created in the cooling jacket on the wet side of the cylinder wall. The same as a marine propeller, the exploding bubbles cause the metal to deteriorate, eventually causing very small pinholes between the combustion chamber and the water jacket. The additive that Chris Hill mentions, prevents the cavitation from occurring in the first place. You can test for the presence of the additive with the test strips but as mentioned, this only confirms the presence at that particular time. If the seller is clueless about the use of SCA's, you will know that he has not maintained the engine and you should run from the deal. Thanks for all the advice! >> This is 7.3 NA with 104K miles. Looks goood in and out but heard >> about problems with the engine block of some diesels, pin holes that [quoted text clipped - 17 lines] >clueless about the use of SCA's, you will know that he has not >maintained the engine and you should run from the deal. |
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