Docwheelhorse 2,561 #1 Posted June 19, 2023 Hello all, Hope to see you in PA in a few days... So @Sparkyand I have been working on our fair share of Onans lately... What is the purpose of this "thing"--the yellow plastic piece, some of the 16 Onans have it and some not. The 20 I recently brought in to work on doesn't have it. Thanks Tony 1 Share this post Link to post Share on other sites
Sparky-(Admin) 19,683 #2 Posted June 19, 2023 FYI..Doc’s 1988 416-8 has it, my 1992 416-8 did not. 2 Share this post Link to post Share on other sites
Pullstart 60,159 #3 Posted June 19, 2023 Air diverter? Force the filter to work as a whole? Noise reduction? Just ideas… 1 Share this post Link to post Share on other sites
Pullstart 60,159 #4 Posted June 19, 2023 Maybe it’s a “Woah Horsey” mechanism? 1 Share this post Link to post Share on other sites
Kenneth R Cluley 483 #5 Posted June 19, 2023 NASCAR intake throttle? 1 Share this post Link to post Share on other sites
Jon Paulsen 282 #6 Posted June 19, 2023 I'd call it the deconfoogulator. I think you could run without, but better get it back on when you go noodlin' fer catfish. 'specially when comin' ferm all the way up thar. Hope you get a biggun'! 1 1 Share this post Link to post Share on other sites
Pullstart 60,159 #7 Posted June 19, 2023 Could also be the anti-quarter-twenty attachment. No loose nuts getting past that thing! Share this post Link to post Share on other sites
lynnmor 6,855 #8 Posted June 19, 2023 The earlier ones had the deconfoogulator, then they dropped it when disconfoogulating fell out style. 1 1 Share this post Link to post Share on other sites
wallfish 16,031 #9 Posted June 20, 2023 Keep from dropping something in there My 20 hp has one too 1 Share this post Link to post Share on other sites
Jon Paulsen 282 #10 Posted June 20, 2023 16 hours ago, lynnmor said: The earlier ones had the deconfoogulator, then they dropped it when disconfoogulating fell out style. makes me wonder if the confoogulated engines run as long as the properly deconfoogulated models. Share this post Link to post Share on other sites
RED-Z06 2,145 #11 Posted June 24, 2023 Anti-spit back plate. Onans get alot of reverb on throttle up and when the governor opens. The plate stops the fuel that gets spit back from accumulating on the filter lid, filter base...because it hits that plate...vaporizes and gets sucked back in...it also aids in throttle response. 2 1 Share this post Link to post Share on other sites
lynnmor 6,855 #12 Posted June 25, 2023 1 hour ago, RED-Z06 said: Anti-spit back plate. Onans get alot of reverb on throttle up and when the governor opens. The plate stops the fuel that gets spit back from accumulating on the filter lid, filter base...because it hits that plate...vaporizes and gets sucked back in...it also aids in throttle response. Possibly, but why did they stop using it about 1990? Share this post Link to post Share on other sites
Handy Don 10,751 #13 Posted June 25, 2023 13 minutes ago, lynnmor said: Possibly, but why did they stop using it about 1990? Introduced the new carb with the accelerator pump? Share this post Link to post Share on other sites
RED-Z06 2,145 #14 Posted June 25, 2023 1 hour ago, lynnmor said: Possibly, but why did they stop using it about 1990? The accelerator pump models were introduced in the mid 90s as stated above. Its hit and miss. My 1991 Deere 420 onan had no plate, but the replacement engine did. The 1993 416-H didnt have it, my 89 Deere 316 didnt have it. I prefer them Share this post Link to post Share on other sites
lynnmor 6,855 #15 Posted June 25, 2023 7 hours ago, Handy Don said: Introduced the new carb with the accelerator pump? The pump came out about 6 years after the deconfoogulator era ended. Share this post Link to post Share on other sites
Handy Don 10,751 #16 Posted June 25, 2023 7 hours ago, lynnmor said: The pump came out about 6 years after the deconfoogulator era ended. Well that wasn’t my best guess then! Share this post Link to post Share on other sites
