Search the Community
Showing results for tags 'mb sports boss 190'.
Recently purchased a used 2000 MB Sports Boss 190 with the GM 350 5.7l V8. Took it out a few times now and each time it runs GREAT!.. for a while, but after about an hour, the motor starts loosing power while cruising. It Bogs down and if I don't pull the throttle back to idle or neutral, it dies. Starts right back up without hesitation and idles in gear just fine, but once the power loss starts (after an hour or so of operation), it wont maintain any speed above 1k RPM and will bog down again. I've replaced the fuel filter, low pressure fuel pump, high pressure fuel pump and spark plugs