Seadoo Challenger 1800 wont go over 3500 rpms
- Thread starter Malkel123
- Start date
- Status
ripcuda
Active Member
It's also possible (happen to me) that the trigger bench tests fine... but fails under load with engine running.
Regarding the lines. See pics... Red is the BLEED lines. The tail of those lines connect to top of the VST. The Green line is the VAC line that goes to the fuel pressure regulator.
Regarding the lines. See pics... Red is the BLEED lines. The tail of those lines connect to top of the VST. The Green line is the VAC line that goes to the fuel pressure regulator.
Attachments
Let's not give up yet.
Compression is low, but should run.
Gas leaking at the reed valves? That indicates a stuck open (leaking) injector. Could be 1 or more injectors.
Also need to figure out if all plugs are firing. You can try using a timing light. The kind that has one wire that clips over the spark plug wire. This can show if there is voltage to fire the plug. It does NOT show that the plug actually fires.
Start checking wire connections. Look for damage and corrosion. No green connections allowed. Be careful with the large one in the bracket, starboard, on throttle body. There is a plastic nut that holds the connector together. The nut breaks easily.
Is your new tps (ouch!) adjusted properly? Specific instructions in service manual. Available for d/l here.
Check the fuel injector wire harness. 4 wires, down low, starboard side. About 1/2 inch diameter. Just pulls apart. Keyed for reassembly.
Have you actually checked ignition timing?
I took apart today the manifold were the reeds are located to check, before doing this the boat was turning on okay forts tried, only issue was the 3500 rpms...injectors were clean by a local shop about 5 months ago...okay put a new gasket for the reeds holder, put the manifold back together and now the boat cranks but won't start...before that tps was check at 2.2 volts moving okay to 7.5 volts...this was done following the manual, disconnecting the sensor with the brown leads, wot and checking voltages on tps cable...so now I have this other issue with it...cranks but won't start.
Run your boat at WOT. Whatever your RPM. Get the engine warmed up.
Shut it off. Feel each spark plug. Are they all hot? Some hotter than others? This is checking to find cylinders that are not producing power (and making heat).
Pcgayheart
Member
Where did you find this manual?
Mr@RXT
Member
You should be able to find the manual online
Hey gang, hope everyone is okay, well back again, sold my challenger 1800 just to buy another beautiful challenger...this time a 2002 challenger 2000...same engine, haven't tried the boat on the water, but everything is original on it, now just a question and I will change the spark plugs later this week, but the boat would only start If throttle is like 1/4 up and after if you bring it back the boat would died...any ideas, other then the obvious, spark plugs replacement...thanks in advance.
Got it , thanks for the response, l have to check everything, cause is smoke alot at idle , but it may be the last person put something in the gas to winterized...but for me it has alot of smoke, I know 2 strokes supposed to smoke, but not that much, right?
- Status
Similar threads
- Locked
