Cam change near finish but mysterious oil pump noise
#1
Cam change near finish but mysterious oil pump noise
New cams are installed in the cam plate and the plate has been torqued in place. I had inspected the pump when everything was out and it looked good. Went through the pump alignment procedure as outlined in the manual. That's when I first noticed the noise.
Hopefully this noise is normal. Sounds like "swish" or "whoosh" when rotating the rear wheel. It's repeated twice each time the crank turns one full revolution. The noise occurs when the flat on the end of the crankshaft is at the 9:00 and 3:00 positions.
Thoughts?
Hopefully this noise is normal. Sounds like "swish" or "whoosh" when rotating the rear wheel. It's repeated twice each time the crank turns one full revolution. The noise occurs when the flat on the end of the crankshaft is at the 9:00 and 3:00 positions.
Thoughts?
Last edited by Dobe66; 11-21-2014 at 09:15 AM.
#3
#4
New cams are installed in the cam plate and the plate has been torqued in place. I had inspected the pump when everything was out and it looked good. Went through the pump alignment procedure as outlined in the manual. That's when I first noticed the noise.
Hopefully this noise is normal. Sounds like "swish" or "whoosh" when rotating the rear wheel. It's repeated twice each time the crank turns one full revolution. The noise occurs when the flat on the end of the crankshaft is at the 9:00 and 3:00 positions.
Thoughts?
Hopefully this noise is normal. Sounds like "swish" or "whoosh" when rotating the rear wheel. It's repeated twice each time the crank turns one full revolution. The noise occurs when the flat on the end of the crankshaft is at the 9:00 and 3:00 positions.
Thoughts?
Mark
#5
Sounds like the "sssssh" sound is coming from inside the cam case. I went ahead and buttoned her up because I couldn't come up with any answers other than the thread responses so far. Without any other mechanical noises and with the rear wheel rotating OK, I tried something else. Put the transmission back into neutral and, with the spark plugs still out, cranked her over several times for about 5-10 seconds each. I would have expected the oil pressure to start building up but saw no sign that that was happening at all.
What the heck is going on? Do I have to take it all back apart and start over?
What the heck is going on? Do I have to take it all back apart and start over?
#6
Sounds like the "sssssh" sound is coming from inside the cam case. I went ahead and buttoned her up because I couldn't come up with any answers other than the thread responses so far. Without any other mechanical noises and with the rear wheel rotating OK, I tried something else. Put the transmission back into neutral and, with the spark plugs still out, cranked her over several times for about 5-10 seconds each. I would have expected the oil pressure to start building up but saw no sign that that was happening at all.
What the heck is going on? Do I have to take it all back apart and start over?
What the heck is going on? Do I have to take it all back apart and start over?
#7
Sounds like the "sssssh" sound is coming from inside the cam case. I went ahead and buttoned her up because I couldn't come up with any answers other than the thread responses so far. Without any other mechanical noises and with the rear wheel rotating OK, I tried something else. Put the transmission back into neutral and, with the spark plugs still out, cranked her over several times for about 5-10 seconds each. I would have expected the oil pressure to start building up but saw no sign that that was happening at all.
What the heck is going on? Do I have to take it all back apart and start over?
What the heck is going on? Do I have to take it all back apart and start over?
Trending Topics
#8
Could the pump's oil bypass valve be stuck open given the "ssssh" sound combined with no oil pressure build up? I did install a new Axtell oil bypass this time around.
Last edited by Dobe66; 11-21-2014 at 08:27 PM.
#9
Not likely. I am not sure the guages get voltage when the starter is engaged. The oil pressure guage is electric. You could have pressure and not know it. I had the same sound turning mine over doing the cams. I'm sure you are fine. As long as there are no leftover parts.
#10