With the pump removed and the supply line in a container with oil, spin the stub shaft with a cordless drill. I use an auto engine oil priming shaft (goes down the distributor hole on a car). I have seen what a new one produces, so just look for good steady supply. These pumps rarely fail, and when they do they usually go to full flow (what you would have at WOT). The Viper engine (and many others) send oil from the pump to the cross shaft gear room and to the mains, as well as to the fuel pump. Check for damaged hoses, and be sure the check valve is installed the right way.kl-ze said:
You may also want to look inside your fuel pump.
9801srx
Member
my thoughts exactly.previouse damage.since the other two cyl's don't seem to be short on oil then the damaged one was getting it also at the time of failure .the lines on the bottom of the case only send lube to the drive gear on the crank then the excess is sent to the pto cyl to be burned .the mag and center cyl's only get their oil from the fuel pump so if one gets it they all get it.the center cyl looks dry because the exteme heat created when a brg fails burns the hell out of the little bit of lube that is in there.when you rebuild it or replace it mix the first tank of fuel 30 or 40to 1 and fill the oil bottle to the top and record the amount of oil used to be sure its getting enuf,you might kill a few plugs doing this but its better than a nother crank.800vmax4 said:
9801srx
Member
two thumbs up to that ! never thought of doing that before ,great idea.Ding said:
daman
New member
one thing tho ding was close you may not see a steady stream these are
pulse pumps they pulse oil not a steady flow.
pulse pumps they pulse oil not a steady flow.
If my oil pump were shot, wouldn't I have had no oil to more spots then that one bearing?Ding said:
mopar1rules
Active member
Ding said:
pistons don't stop the blow by....its the rings that do that job. either rings weren't replaced, and/or the sled was babied during break-in, instead of hammering on it. need a good load to seat the rings properly. give it hammertime, starting at mile 1 after a rebuild.
Yes it is likely not the pump itself, I think you can rule that out. However, I was thinking of oil getting all the way to the carb. It goes to the fuel pump on one line, but then of course gets mixed with fuel and sent to each carb via a separate hose. That is why I wondered about that carb bowl being full or not. Just covering all the bases. I hear of many guys failing to find the root cause, and then repeating the failure again.Tg5593 said:
Yes the oil pulses from the piston action in the pump. Poor choice of words on my part.
Sounds like you are going with a whole different engine. Be sure to make sure that any parts you plan on using from the old setup are checked out.
Sorry guys, I sure have been getting off track easily as of late. It might be this silly cold medicine I am taking. Or, more likely the fact that I haven't ventured outside for almost a week now and am experiencing outdoor withdrawals. At the moment I can't even remember where my Viper is.