Thanks for all the replies. Here is an update.
I forgot to mention that my old IP main shaft broke in half, which would mean that every time I attempted to start the motor after it broke, the pump and engine alignment went out of adjustment. So I could have moved the fly while all I wanted after I removed the IP.
Fortunately, I must have replaced the IP in the right location, or it wouldn't have run at all. Right?
Also, when I said that I was out 5/16" I was wrong. Yesterday, I measured it again and I only had the IP retarded (I twisted the IP backwards ((upwards)) against the arrow on the IP identification plack) 3/16", which hopefully isn't that bad. It basically won't hold an idle at 700 rpm without retarding it this much.
When OldRover suggested that the pump hub might be off by a tooth, I got lost
. This IP only fits two ways (either right or wrong ((180 degrees out)). So is OldRover suggesting that this IP might have been rebuilt slightly out of time (off by a tooth)?
Also, yesterday, I lessened the retarded (I think I'm retarding it by twisting it upwards away from the arrow) timing by a 1/16" (giving me 3/16" total retard) and now I easily get 3,000 rpm at idle (I won't allow it to go higher for fear ???) and the power at anchor
seems to be enough to get me by. Next time I take it out, I will not be towing my heavy ass dinghy
and see how what kink of power I get. I'm expecting enough will be the case.
Here is a little tip for anybody having to replace their Perkins 4-108 that I have finally figured out. That damn allen wrench head
screw bolt that goes into that back IP hole (one of three) requires a special long ass (I guess at least 14") allen wrench and another person to help align the allen wrench every time you want to loosen it to readjust or even tighten that bolt. So what had to do, rather than buy a $82.00 long handle allen wrench set, which may not have been long enough anyway, was to make my own allen wrench with a 1/4" steel
rod and a file (first attempt worked fine if you have the bolt or a 7/32" female allen wrench hole to guage it by. Then I bent the end an inch or so to turn it with. And yesterday, after tiring of having to always bring my wife out to help align that damn allen wrench, I picked up some fast drying metal weld glue (B&H or whatever) and glued the long ass allen wrench to the allen head
bolt. Hopefully, now if I ever have to remove or readjust the IP, it'll be a one man task and a hell of a lot easier.
Another thing I may have forgot to mention is that before buying
the IP I shut off my old mechanical lift pump that I that was bad and in fact may be (I gotta buy another one now) and replaced it with a new electric
lift pump (westerbake) that may have developed a plugged filter while draining the old diesel
out of the tank (even though I had placed it after the primary filter). I'm now hoping that this dirty elect. pump filter may be causing the problem. But kink of doubt it since that would mean I would be running fuel
poor and not rich, which would not account for the diesel smell, or excess diesel burning. But then maybe the electric lift pump may be pumping too much fuel into the IP, which is another reason why I plan on buying
a new mechanical lift pump and then see how she runs.
Thanks guys for help. I'll let you know what happens after I get my new mechanical lift pump installed and shut down that electric lift pump (Anchorage marine
charged me $280.00 for that sucker plus tax). I guess they saw me coming. They also told me if my IP was bad, it would cost $5,000.00. These are hard pumps to find, but not that hard.
Oh, and one more thing. I found a guy who said he had a NEW pump somewhere in USA for $1299 but wouldn't accept a credit card and wanted me to pay with a bank deposit check. What a joke. Be careful. This guy is still out there. He may honest, but I doubt it, considering he is a big shot IP rebuilder in USA and advertises but doesn't accept credit cards or Paypal and only accepts cash deposits into his bank. I would even imagine that NEW IP for this motor would have cost more that the $1299 he was asking in cash.