Engine speed way too high
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
Engine speed way too high
I have MSII controlling a Honda GX35 engine. I have not yet gotten the engine to run using this, but i have got it to inject while using the pull start. When I pull the pull start the engine speed that appears on the control panel on the labtop is way too high. Is there any common reason why this may be happening?
Re: Engine speed way too high
The higher speed can be due to 2 things: a misconfiguration in your inputs, which generally shows up as an rpm that is double what you would expect. Noise in the ignition Input channel that can cause a noise pulse to come between 2 real pulses and therefore the ECU thinks the engine is turning faster than it really is. The latter is generally random with ridiculous rpms like 5000 when cranking. This usually shows up as the rpm frequently jumping to 0 then back to a high number, etc.
Re: Engine speed way too high
I think the problem is probably the signal noise. Should I just try and insulate the wire better? Also would that have any affect on actually running the engine. I try to run the engine and I know the fuel injector is squirting but I dont think there is ever a spark. Can you offer any advice on this?
thanks,
G
thanks,
G
Re: Engine speed way too high
If you get fuel you should get spark, but we need to see your msq and a short datalog of the startup to see what is going on.
Re: Engine speed way too high
ive got the engine running now but the RPMs are still way too high. i think that it is because of noise in the ignition input channel. do you have any advice on how to fix this?
G
G
Re: Engine speed way too high
If rpms are too high, are they double the actual rpms ? If that is the case then it's likely a configuration problem (too few skip teeth or something like that). If there were ignition noise the car would run terribly and you would see the rpm go all over the place and also drop to 0 instantly every time it lost synch. You would see the rpm gauge needle dip to 0 for an instant every so often.gshoger wrote:ive got the engine running now but the RPMs are still way too high. i think that it is because of noise in the ignition input channel. do you have any advice on how to fix this?
G
There are a lot of fixes for input noise starting with making sure the inputs don't cross plug wires. But first make sure it is noise.