I have a 1985 Southwind Motrohome with a gas 454.
I have had ignition problems with it since I got (reason previous owner sold it).
I traced the original problem to corrosion on the #5 spark plug boot when it fell off in my hand.
Since then I replaced the wires and plugs with some Bosch Platinum. It ran so good I had problems keeping it under 70.
Then all of a I started loosing power. i was able to make it home, but I was not running on all 8.
I pulled the plugs and found that 3 had suffered from Splash Deposits (first time I had seeen that)
Before I put another set of plugs in,doeas anyone have any advice?