logo
Thread Tools
Old 09-30-2019, 10:28 AM
ROFF is online now
Find More Posts by ROFF
Registered User
ROFF's Avatar
United States, TX, Heath
Joined Oct 2015
121 Posts
Discussion
DA 100 4 cycles

So my DA 100 goes into 4 cycle at lower power settings. It does this at low power settings after pulling off the power. Goes away if I add power. I canít really tell if itís one or both cylinders but I suspect itís both. Itís very evident from the sound and if the smoke is on its apparent there as well. Other than that the engine runs perfect. I purchased it second hand and it was practically new. Sent to DA to have the cylinders machined down and a checkup. All was well.

Iím running a Biela 26x10 3 blade and Iíve swapped the plugs out with 1/4-32 plugs for cowl clearance.

I was running a falcon 26x12 3 blade earlier which was a bit much but it didnít do the 4 cycle thing.

Any suggestions?

Thanks
ROFF is online now Find More Posts by ROFF
Reply With Quote Quick reply to this message
Sign up now
to remove ads between posts
Old 09-30-2019, 10:33 AM
BJORNBAAL is offline
Find More Posts by BJORNBAAL
Registered User
BJORNBAAL's Avatar
United States, TX, Midland
Joined Sep 2010
321 Posts
You may have to lean the low needle slightly
BJORNBAAL is offline Find More Posts by BJORNBAAL
Reply With Quote Quick reply to this message
Old 09-30-2019, 10:44 AM
ROFF is online now
Find More Posts by ROFF
Registered User
ROFF's Avatar
United States, TX, Heath
Joined Oct 2015
121 Posts
Yea I was thinking that. I think those plugs are more sensitive to a rich mixture. It ran perfect as it was and I haven’t cut a hole for needle access yet so....

I’m being lazy.
ROFF is online now Find More Posts by ROFF
Reply With Quote Quick reply to this message
Old 09-30-2019, 11:06 AM
g257945 is offline
Find More Posts by g257945
Registered User
g257945's Avatar
United States, IN, Fort Wayne
Joined Oct 2014
704 Posts
Might need to adjust the valves...

Scott
g257945 is offline Find More Posts by g257945
Reply With Quote Quick reply to this message
Old 09-30-2019, 11:09 AM
ROFF is online now
Find More Posts by ROFF
Registered User
ROFF's Avatar
United States, TX, Heath
Joined Oct 2015
121 Posts
The Fetzer valve?

I’lllook for it
ROFF is online now Find More Posts by ROFF
Reply With Quote Quick reply to this message


Quick Reply
Message:


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools