CV23 help one cylinder rich????
drmopar1
14 years ago
Featured Answer
Sort by:Oldest
Comments (25)
canguy
14 years agomownie
14 years agoRelated Discussions
Honda GCV 160 runs rich
Comments (26)Hi Guys Further update, IÂve had another hour with the mower this evening. Before attempting the cam cover removal I thought IÂd check the ignition timing. To do this I removed the red plastic cowling removed the plug and turned the engine by hand to TDC,inserted a thin metal rod to touch the top of the piston, and turned the engine to measure the down stroke (I make it approx 55mm). This gives 55mm X 2 =110 mm for the total down and upstroke of the piston, this is achieved in 360 degrees rotation of the crank. So a bit of maths (please correct me if IÂm wrong on this one) 360 degree of crank is 110mm piston movement 1 degree of crank = 110/360 piston movement =0.3mm piston movement 10 degree of crank = 110/360 x10 piston movement =3mm piston movement. ( I took 10 degrees as an optimum ignition timing for an engine). I marked a position on the started ring with fluorescent paint and marked TDC and 10 degrees before TCD and 10 degrees after TDC on the red plastic cowling adjacent to one of the slots in the cowling so I could strobe through it to the starter ring fluorescent mark. Re-attached the cowling connected the strobe and the engine ran with the timing showing about 10 degrees BTDC on this crude measurement. Increasing the engine speed did not alter the timing after the usual 20 seconds at about 2,000 - 2500 RPM the fault reoccurred but the ignition timing stayed constant until the engine stopped. I think this has eliminated ignition problems. Have I missed anything before removing the cam cover ? Cheers Pete...See MoreKohler command cv23s running rich. Help, please.
Comments (18)Marty dumping fuel through the venturi on CV twin is typically the float valve not seating. The floats are mostly not adjustable, but should be checked for saturation. You will need to know that the vent for the bowl is open. Other than that , some had an accelerator pump on the side- 3 small screws in the cover which will cause a rich condition. There are several variations of carbs on these and you will need to toss the model and spec on the googler and look up some parts. Click on the carburetor in the diagram to see the service parts used, or replace the carb complete....See Morehelp me please!!! timing on briggs & stratton model # 445777
Comments (25)OK, switching the spark plugs to opposite cylinders, and getting the same plug coloration on the same cylinders rules out the chance of a plug problem. Blackened spark plugs typically indicate a fuel/air mix that is too heavy on the fuel side of the scales (rich mix). But there is a caveat in that logic: The engine must be in known good working order regarding everything else about the condition of the engine. And we do not know if everything else is actually good (at this time) so the process of elimination is necessary to cross off things that might be causing one cylinder to blacken its plugs while the other cylinder appears to be operating normally. So, we know cylinder #2 blackens its plugs. Usually this means it is running too rich, but cylinder #1 does not blacken its plug. Both cylinders are fed from the same carburetor. Though it is a 2 barrel carb......the fuel metering is done with a single main jet, so theoretically.......both barrels should be receiving the same volume of fuel from the bowl, and feeding the same volume of fuel to their respective cylinder. Using this logic one would expect that both cylinders would either be running rich, or that both cylinders would be running a normal mixture. And because of this discrepancy, we must consider (and try to eliminate) the possibility that there is an intermittent sparking problem with one of the ignition coils, or that the engine has a mechanical fault that is causing cylinder #2 to either be running rich, or to be suffering from incomplete combustion. At this time, I suggest you swap the ignition coils to opposite cylinders to see if the plug coloration follows the coil, or still remains with the cylinder. As I stated before, if you want a PDF copy of the service manual, send me an e-mail. Your forum e-mail capability is not active (because you opted out) but mine is active....See MorePoulan 25HP Intek - Runs Rich under load
Comments (6)I doubt that the following has any bearing on your current problem, but I noticed you mentioned that you "run premium fuel". I presume you are using "the higher octane rating". The HIGHER the octane rating.........the SLOWER the fuel burns. High octane rated fuel is made for engines with high compression ratios (to minimize spontaneous ignition/detonation). Nearly ALL gasoline fueled engines manufactured after the early to mid 1980's are designed to use regular grade of pump gas (87 octane). When you use "premium grade" gasoline in a low compression engine you are accomplishing 2 things for sure. #1..You are paying more money for a product that you will not be able to realize it's intended benefits (because the engine has too little a compression ratio). #2...You automatically ensure that more unburned fuel will be present in the exhaust stream (because the high octane rated fuel cannot burn completely in the power stroke portion of the operating cycle in a low compression engine. I realize that a lot of folks think that you get more power by using "premium grade gas", and they get a "feel good" in doing so. The truth about premium gas yielding more power only occurs if the engine in question actually has a high enough compression ratio to REQUIRE high octane fuel....See Moredrmopar1
14 years agomownie
14 years agodrmopar1
14 years agobushleague
14 years agomownie
14 years agodrmopar1
14 years agodrmopar1
14 years agotomplum
14 years agodrmopar1
14 years agotomplum
14 years agodrmopar1
14 years agofixit1dh
14 years agodrmopar1
14 years agotomplum
14 years agodrmopar1
14 years agomownie
14 years agodrmopar1
14 years agodrmopar1
14 years agomownie
14 years agodrmopar1
14 years agomownie
14 years agorbrown7824_aol_com
12 years ago
Related Stories
COLORPaint-Picking Help and Secrets From a Color Expert
Advice for wall and trim colors, what to always do before committing and the one paint feature you should completely ignore
Full StoryDECORATING GUIDES9 Ways to Use Rich, Dark Paint
See how deep colors — navy blue, charcoal, dark chocolate — can bring out your home's best details
Full StoryEXTERIOR COLORExterior Color of the Week: Rich, Fall-Friendly Reds
Look to the crimsons and burgundies of turning autumn leaves for a deep, captivating home color
Full StoryMOVINGRelocating Help: 8 Tips for a Happier Long-Distance Move
Trash bags, houseplants and a good cry all have their role when it comes to this major life change
Full StoryCOLORPick-a-Paint Help: How to Quit Procrastinating on Color Choice
If you're up to your ears in paint chips but no further to pinning down a hue, our new 3-part series is for you
Full StoryEXTERIORSHelp! What Color Should I Paint My House Exterior?
Real homeowners get real help in choosing paint palettes. Bonus: 3 tips for everyone on picking exterior colors
Full StoryCOLORWhat Goes With Purple Walls?
Make a plum wall come alive with art, warm metals, ivory, chartreuse, natural wood — and at least one wild card
Full StoryROOTS OF STYLERoots of Style: The Indelible Charm of American Tudors
Rich details and an intimate scale give this English-inspired architectural style memorable character and flexibilty
Full StoryBATHROOM STYLESYour Guide to 10 Popular Bathroom Styles
Find out the key features, colors and details of each style and discover which one is right for you
Full StoryREMODELING GUIDESKey Measurements for a Dream Bedroom
Learn the dimensions that will help your bed, nightstands and other furnishings fit neatly and comfortably in the space
Full StoryColumbus Area's Luxury Design Build Firm | 17x Best of Houzz Winner!
tomplum