• Welcome to Jetboaters.net!

    We are delighted you have found your way to the best Jet Boaters Forum on the internet! Please consider Signing Up so that you can enjoy all the features and offers on the forum. We have members with boats from all the major manufacturers including Yamaha, Seadoo, Scarab and Chaparral. We don't email you SPAM, and the site is totally non-commercial. So what's to lose? IT IS FREE!

    Membership allows you to ask questions (no matter how mundane), meet up with other jet boaters, see full images (not just thumbnails), browse the member map and qualifies you for members only discounts offered by vendors who run specials for our members only! (It also gets rid of this banner!)

    free hit counter
  • Guest, we are pleased to announce that Hydrophase Ridesteady is offering an extra $100 off for JETBOATERS.NET members on any Ridesteady for Yamaha Speed Control system purchased through March 7th, 2025. Ridesteady is a speed control system (“cruise control”) that uses GPS satellites or engine RPM to keep your boat at the set speed you choose. On twin engine boats, it will also automatically synchronize your engines.

    Click Here for more information>Ride Steady group buy for JetBoaters.net members only

    You can dismiss this Notice by clicking the "X" in the upper right>>>>>

Hard Starting and Rough Idle

C

chatt230

Active Member
Messages
14
Reaction score
5
Points
32
Boat Make
Yamaha
Year
2008
Boat Model
AR
Boat Length
23
My boat is hard starting and idling rough on the starboard engine. The port engine is turning over but very hard starting. Any ideas what the issue could be? Spark plugs?

It’s a 2008 AR230 with twin HO MR-1s.
 
How old is your gas?
How full is your tank?
 
Spark plugs.
 
Have you ever run any injector cleaner through it? If not pick up some Techron marine fuel system injector cleaner and run through it. I try to do that at least twice a season.
 
You must log in or register to reply here.

Similar threads

J
Intermittent starting of one engine (Throttle valve opening?) 2004 230 SX
Replies
7
Views
167
jbusche
J
J
Starboard engine idle issue (255xd)
Replies
9
Views
272
FSH 210 Sport
FSH 210 Sport
S
2003 AR210 starter location or tips.
Replies
6
Views
165
anmut
anmut
Leojay
Periodic hard starting....help needed!
2
Replies
20
Views
1K
OntheWater77
O
C
17 Scarab twin 250 port engine turns over, no start P0340, sensor replaced
Replies
7
Views
257
Luc Lafreniere
Luc Lafreniere
Back
Top