I have the misfire on cylinder P0303. Mine does it under hard acceleration. Never replaced coils with new ones. Swapped 3 and 4, and P0303 came back. Gonna see what Honda says. One mechanic said it's my valves need adjustment. I don't believe that's the issue. I do have lots of ticking from valves though.
I have 2005 honda odyssey 3.5 v6 I was getting same p0303 code while fast acceleration I swap coil,change spark plugs it keep come back one day I was shoot my led light by harmonic balancer I saw it separated from pulley I had to replaced crankshaft harmonic damper solved my problem after took highway road test never those missing come back.
I replaced everything and nothing worked but today I cleaned around and cleaned this clogged hose that comes from transmission to like no where cuz it dosent hook up the other end anywhere and finally its fixed and no more car shaking
I knew the issue the second I saw the engine bay. Great thing these J-series V6 engines are easy to work on and maintain.
Valve adjustment. Had the same codes for months with VtM4 light on. Valve adjusted an all been good for amounts 6 years now.
How often do you adjust the valves?
Definitely get the valves adjusted, check that plug, it'll likely be fouled out. Then should have compression check
I have the misfire on cylinder P0303. Mine does it under hard acceleration. Never replaced coils with new ones. Swapped 3 and 4, and P0303 came back. Gonna see what Honda says. One mechanic said it's my valves need adjustment. I don't believe that's the issue. I do have lots of ticking from valves though.
It could be the valve adjustment, especially since they are ticking loud. Did you swap the spark plugs around?
I have 2005 honda odyssey 3.5 v6 I was getting same p0303 code while fast acceleration I swap coil,change spark plugs it keep come back one day I was shoot my led light by harmonic balancer I saw it separated from pulley I had to replaced crankshaft harmonic damper solved my problem after took highway road test never those missing come back.
@@FtWChevyTruck Did bother with swapping plugs since they are only 7 months old.
I assume it was missing before the new spark plugs? It's possible to get a bad spark plug
@@FtWChevyTruck That's true...but it started last year before I got new spark plugs.
I got a 2005 mdx that is saying all 6 cylinders are misfiring….tried everything so far
I replaced everything and nothing worked but today I cleaned around and cleaned this clogged hose that comes from transmission to like no where cuz it dosent hook up the other end anywhere and finally its fixed and no more car shaking
For me it was the valve adjustment
Valve adjustment did it and it started doing it again after 6 months same codes
@@juniorjones5137 yea sometimes I get for cylinder 4,1,6
Egr!!!
what is all data?
It's a subscription website that has manufacturers repair information on it
thanks...@@FtWChevyTruck