Timing problems - Help before I take a sledge to the motor!
04-12-2004, 09:26 PM
#51
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Originally posted by formula31
And just in case, and dont holler at me if you know this, but the cylinder locations are
front of engine
1 2
3 4
5 6
7 dist 8
And you need a timing light, one that you can read the full advance is prefered, or use a timing tape on the harmonic balancer.
And just in case, and dont holler at me if you know this, but the cylinder locations are
front of engine
1 2
3 4
5 6
7 dist 8
And you need a timing light, one that you can read the full advance is prefered, or use a timing tape on the harmonic balancer.
That diagram in the selco manual is wrong and kinda freaked me out, but tried the reverse and it wouldn't start.
My bet at this point is timing and carb running lean. We'll find out soon enough, taking it to the boat Rx!
I'll have more info in about a week or so.
THANKS again to all those willing to help.
04-15-2004, 10:02 PM
#52
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Ahhhhhhhggg
Early word is bent pushrod in #6 cyl and wasted cam lobe.
I'm wondering if the rod bent last year when my Lightning's let go and I ended up with water in the cyls? At that time the motor wouldn't start after idling, checked the oil and it was chocolate milk. Since it was only at idle, we figured no damage done and we ran the motor for one season.
Perhaps the bent rod didn't sit in the new lifter (from the current cam install) very well and wasted the lobe?
Now I need to figure out what type of rebuild I wanna do!
Early word is bent pushrod in #6 cyl and wasted cam lobe.
I'm wondering if the rod bent last year when my Lightning's let go and I ended up with water in the cyls? At that time the motor wouldn't start after idling, checked the oil and it was chocolate milk. Since it was only at idle, we figured no damage done and we ran the motor for one season.
Perhaps the bent rod didn't sit in the new lifter (from the current cam install) very well and wasted the lobe?
Now I need to figure out what type of rebuild I wanna do!
04-15-2004, 10:15 PM
#53
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Originally posted by Infomaniac
Exhaust cam lobe, lifter, rocker, spring or pushrod will contribute to popping out the carb.
Exhaust cam lobe, lifter, rocker, spring or pushrod will contribute to popping out the carb.
Sorry to hear the bad news man.Make sure coil bind or retainer smacking guide is not happening.
04-15-2004, 11:04 PM
#54
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Thanks Info,
I'm still holding out a little hope, not sure how they diagnosed the wasted lobe. We're still hoping for a push rod/lifter or stuck valve issue.
They also told me my impeller was wasted. I had replaced it at the same time I did the cam install (1/2 hour of running time ago) and it was running fine on the lake and at my house under a hose (always under a hose NEVER dry, not even a second), was running right at 140. Not sure how that chaged in between here and the shop.
I'm still holding out a little hope, not sure how they diagnosed the wasted lobe. We're still hoping for a push rod/lifter or stuck valve issue.
They also told me my impeller was wasted. I had replaced it at the same time I did the cam install (1/2 hour of running time ago) and it was running fine on the lake and at my house under a hose (always under a hose NEVER dry, not even a second), was running right at 140. Not sure how that chaged in between here and the shop.
04-16-2004, 09:33 AM
#55
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Originally posted by Craig B
Thanks Info,
They also told me my impeller was wasted. I had replaced it at the same time I did the cam install (1/2 hour of running time ago) and it was running fine on the lake and at my house under a hose (always under a hose NEVER dry, not even a second), was running right at 140. Not sure how that chaged in between here and the shop.
Thanks Info,
They also told me my impeller was wasted. I had replaced it at the same time I did the cam install (1/2 hour of running time ago) and it was running fine on the lake and at my house under a hose (always under a hose NEVER dry, not even a second), was running right at 140. Not sure how that chaged in between here and the shop.
Now the impeller!! I'm thinking the shop was a little light on business this week
03-27-2008, 09:02 AM
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03-27-2008, 10:22 AM
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Still dunno WTF happened, but I have a new 496 stroker as the result
03-27-2008, 09:01 PM
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I know it is a pain in the a**, But if you run double valve springs, Leave the inside spring out for 30-55 min. of proper cam break in time. This reduces the pressure on the lobes a whole bunch. Then pull covers and put inner springs back in.! If you want to get real professional you can buy cam break in rocker arms that have a reduced ratio for lower pressure on the lobes and less lift for break in!
