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Changing spark plug on 95' Horizon
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Author:  Ken M [ Fri May 10, 2013 6:05 pm ]
Post subject:  Changing spark plug on 95' Horizon

Have a Horizon 190 95' Jetboat with a 351 Redline motor in it. Do i need to remove stuff to change the spark plugs? Thanks :roll:

Author:  LouC [ Fri May 10, 2013 6:59 pm ]
Post subject:  Re: Changing spark plug on 95' Horizon

Its hard to say because I have never worked on one. If you have clearance around the exhaust manifold it should be easy. On my Chev 4.3 its very easy, easier than most modern cars.

Author:  Surface Interval [ Sat May 11, 2013 12:24 am ]
Post subject:  Re: Changing spark plug on 95' Horizon

I think the 351and 302 have essentially the same exhaust manifolds. My '95 190 Horizon with the 5.0 (302 EFI) was a little hard to get at, but I bought a 3/8ths drive spark plug socket with a universal joint as part of the socket. This u joint/socket with an extension worked well. A standard deep socket or a spark plug socket with a separate universal joint may not work. There is usually not enough clearance in the area of the u joint with a separate socket and u joint because of length. As with any spark plug job, a spark plug socket and a tiny bit of anti seize on the new plug 's threads make reduce the chance for problems now and the next time.

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