Port Engine Not Getting Up To Speed

k9th · Post by **k9th** » Sun Jul 17, 2011 7:39 pm

Well the pump was replaced & now the port engine goes to 3,000RPM WOT. The starboard is at 3,400RPM WOT. The strange thing is that according to my synchronizer they are perfectly synchronized. I'm now wondering if I also may have tachs not reading accurately.

rcnorman · Post by **rcnorman** » Tue Jul 19, 2011 3:59 pm

My port engine was sucking air too causing it to pop at high RPMs. Rain water had leaked into the exhaust manifold through the aft deck. I discovered this when I went to replace the valley pan. I also discovered that there was NO gasket between the pan and block nor between the pan and intake. Fixed that.

This past weekend when I went to take her out, I still couldn't get over 2000 RPMs. Could a bent prop be contributing to this? I can rev up to over 3,000 RPM, but when I put into gear and try, can't get over 2000.

alexander38 · Post by **alexander38** » Tue Jul 19, 2011 7:36 pm

what make you think the prop is bent ? does it back fire or pop ? how old are the filters ? anti- siphon valves working right ? is you fuel pump keeping up with demand ? have switched to corn-gas or ran any thur it ? all the above can and cause whats goin' on. O and then there's timing I'll let the mopar guys deal with that

prowlersfish · Post by **prowlersfish** » Tue Jul 19, 2011 8:42 pm

Clean the props

alexander38 · Post by **alexander38** » Tue Jul 19, 2011 9:08 pm

just trouble with engine right ? if so most likely not a prop if just one engine is down on power

prowlersfish · Post by **prowlersfish** » Tue Jul 19, 2011 10:33 pm

Unless its bent , but I think you would know when you bent it .

rcnorman · Post by **rcnorman** » Wed Jul 20, 2011 12:23 am

Yes, I think its the props. I grounded her end of last summer (first time) and had to be pulled off. I think that likely damaged both props. I have a spare set and will probably do a short haul to inspect and replace.

As far as all the other issues, I had quite a bit of maintenance done to both engines last summer (over $4K) and just replaced my inline fuel filters again last weekend. If it's not my props, then I'll start checking off these other things, but I'm almost certain my props are damaged.

alexander38 · Post by **alexander38** » Wed Jul 20, 2011 5:01 am

well then

prowlersfish · Post by **prowlersfish** » Wed Jul 20, 2011 6:43 am

Bent and or dirty if you havent looked at them sence last summer , That would be my guess .

alexander38 · Post by **alexander38** » Wed Jul 20, 2011 7:09 pm

i bet there's little white critters all over them

aweimer · Post by **aweimer** » Sun Jul 24, 2011 12:00 am

Ordered a replacement. I will let you know if this solves my issue as well.