B.B.Upch wrote:
Well that may be true but my thought was not to throw parts at a problem but a unit that is 20 years old & has never been serviced other than oil & air filter & that has not been touched in at least 4 years since th rv has been moved might need some fresh parts. & yes I would like to change the spark plugs but still can not find them or anyone to tell me where to look. There is not much room to work in this small of space so I do what I can. Thanks for replying & if u can tell me where to look for spark plugs then that will be next on my list. Thanks
They are on top about middle side to side. There is 1 you access from the front by the carb and such if no top clearance you access the other from the backside underneath. If you look at this link. The spark plugs are where those 2 rectangular cut outs are on the top plate of the Onan. Doug
https://www.google.com/search?q=onan+marquis+7000+service+manual&sa=X&biw=1024&bih=599&tbm=isch&imgil=NTcNumLGDApXQM%253A%253BQQWOp9x6HTcP7M%253Bhttp%25253A%25252F%25252Fwww.smokstak.com%25252Fforum%25252Fshowthread.php%25253Ft%2525253D93926&source=iu&pf=m&fir=NTcNumLGDApXQM%253A%252CQQWOp9x6HTcP7M%252C_&usg=__ijt8TwyzvbCc0wIQ1OLL8jl4enI%3D&ved=0ahUKEwjjqJGD__3NAhXK44MKHeHwAK8QyjcILA&ei=2U6NV6PYFsrHjwTh4YP4Cg#imgrc=NTcNumLGDApXQM%3A