adamsanders
Full Access Member
Hello everybody,
Over Memorial Day weekend I had the opportunity to use my 91 F250 to move a load of furniture on about a 200 mile round trip. It's the first longer trip I've taken my truck since I bought about a year ago. The truck is N/A with a Mini Moose injection pump that I also bought last summer. Like I said, the truck sees mostly short trips so the pump only has about 3000 miles on it. The truck performed perfect and got 16.3 MPG over the trip. It had a 10ft utility trailer on it as well. However, I did notice something that concerns me.
While cruising at ~65mph on the freeway, anytime I started to hit an incline I would start puffing black smoke. It wasn't huge clouds (it will if I romp on it at all) but still a constant stream even on a relatively small grade, unloaded. I haven't messed the IP at all as far as fuel. I did not replace the injectors when I got the pump because I wasn't sure if I was keeping the truck. Is it possible that they are popping so low that the timing is effectively very advanced? I simply lined the static marks up and truck ran fine. The engine clatter doesn't sound obnoxious or anything, little loud with the cold idle on but nothing over the top. None of the local diesel shops have the timing meters for this truck nor is there anyone in the registry within a few hundred miles of me. One thing I have noticed though; the truck never starts "instantly" when hot like I have heard so many other IDIs do. It almost like the starter has to "drag" the engine along for a couple seconds before it hits. Would advanced timing cause this too? I'm about to be pulling a larger boat this summer and don't want to melt anything down so I have a pyro on the way as well. Thanks for any help in advance!
Over Memorial Day weekend I had the opportunity to use my 91 F250 to move a load of furniture on about a 200 mile round trip. It's the first longer trip I've taken my truck since I bought about a year ago. The truck is N/A with a Mini Moose injection pump that I also bought last summer. Like I said, the truck sees mostly short trips so the pump only has about 3000 miles on it. The truck performed perfect and got 16.3 MPG over the trip. It had a 10ft utility trailer on it as well. However, I did notice something that concerns me.
While cruising at ~65mph on the freeway, anytime I started to hit an incline I would start puffing black smoke. It wasn't huge clouds (it will if I romp on it at all) but still a constant stream even on a relatively small grade, unloaded. I haven't messed the IP at all as far as fuel. I did not replace the injectors when I got the pump because I wasn't sure if I was keeping the truck. Is it possible that they are popping so low that the timing is effectively very advanced? I simply lined the static marks up and truck ran fine. The engine clatter doesn't sound obnoxious or anything, little loud with the cold idle on but nothing over the top. None of the local diesel shops have the timing meters for this truck nor is there anyone in the registry within a few hundred miles of me. One thing I have noticed though; the truck never starts "instantly" when hot like I have heard so many other IDIs do. It almost like the starter has to "drag" the engine along for a couple seconds before it hits. Would advanced timing cause this too? I'm about to be pulling a larger boat this summer and don't want to melt anything down so I have a pyro on the way as well. Thanks for any help in advance!
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