Reed change lose power?

**croSSed** · 08-01-2019, 05:31 PM

Originally Posted by Motv18

Was their a change in temp and humidity from the higher numbers. 90-100 temp can rob 500 rpm vs. 50-70. Some older carb motors even have cold hot stop levers so you don’t over run when it’s cool out.

Nope.
Chris, I'll give a call tomorrow probably late in the day. West Coast time and all. Thanks.

**SS Minnow** · 08-03-2019, 02:47 PM

Originally Posted by SS Minnow

https://www.screamandfly.com/search....archid=4961162

For some reason the above link leads to nothing, sorry about that. It worked before. Will try again.

https://www.screamandfly.com/search....archid=4968856

ETA, that works much better. Must of just copied and pasted wrong link.

**croSSed** · 08-09-2019, 01:02 PM

BTW, here are my comp readings: #1-120, #2-128, #3-122, #4-130,#5-119, #6-129. Not great, but still within 10%.
SS Minnow - The hyperlink above doesn't work. Sorry.

**Dave S** · 08-09-2019, 04:58 PM

reed stops and Breck point.....Where the reed starts bending.......Also plst reeds are stiffer .... than ss....jmo....

**Dave S** · 08-09-2019, 05:00 PM

your comp # are with range......

**Merc 2.5** · 08-09-2019, 06:00 PM

Just grab a thinner set from chris and see how it goes , I'm sure i got steel reeds that was n good shape when took off ( use at own risk) I'll check if ur interested

**croSSed** · 08-14-2019, 01:44 AM

Uh oh.
My engine just started missing. It has been backfiring/sneezing through the top carb on the starboard side at idle. What could this be?

**Merc 2.5** · 08-14-2019, 02:51 PM

A miss or pick up tube stopped up b my guess , unless u broke a reed I highly doubt the reeds is sneeze issue, do u have a spark tester? Miss at idle or what rpm? Or from idle to wot

**Motv18** · 08-14-2019, 09:05 PM

On the other hand that sucks, but might have discovered the real power issue.

Could also be unrelated

**croSSed** · 08-14-2019, 09:28 PM

Originally Posted by Merc 2.5

A miss or pick up tube stopped up b my guess , unless u broke a reed I highly doubt the reeds is sneeze issue, do u have a spark tester? Miss at idle or what rpm? Or from idle to wot

I have a multimeter. Not sure how to use it in a case like this, though. I can also tell you that while I was running it in my driveway I pulled the #1 plug wire from the plug to see how differently it would run, and got grounded GOOD. Seems it isn't a spark issue. I can't make it replicate the problem in the driveway. It needs to be under load. It sneezes back through carb at dead idle in gear, 700 rpm. I doubt it's a reed, too. If it was a reed it'd be leaking comp back through on every up stroke of #1 piston.
No matter; I hope to find out tomorrow what the prob is as the reed block is coming out to put new reeds in.

**tlwjkw** · 08-15-2019, 04:38 AM

pull cowl and start after dark...

**croSSed** · 08-15-2019, 02:08 PM

Originally Posted by tlwjkw

pull cowl and start after dark...

Hehe. The neighbors will LOVE that - smoke and noise...What would I be looking for? Flames in a carb throat?

**RSWORDS** · 08-15-2019, 02:12 PM

Lean sneeze? Where are your mixture screws?

**croSSed** · 08-15-2019, 02:58 PM

Originally Posted by RSWORDS

Lean sneeze? Where are your mixture screws?

The thing is, the carbs haven't been touched. Why would it suddenly start leaning out? Plugged idle jet, vacuum leak... Those seem like the only real possibilities.