Hello, quick question -
I've wired my sensors according to the documentation I have (MS1, which I have) and all of the sensors appear to work when tested, however the injectors make an auditable 'click' when I plug the DB-37 connector into the MS1 and apply power to it. I am not cranking it at this point, I am only testing it.
This is normal? Doesn't the clicking in the injectors mean they are opening?
Injectors clicking when MS is plugged in
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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.
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Bernard Fife
- Master Squirter
- Posts: 475
- Joined: Thu Oct 29, 2009 12:54 pm
Re: Injectors clicking when MS is plugged in
b,
That is likely the "prime pulse". Search for 'prime' on this page: http://www.megamanual.com/v22manual/mtune.htm#howto
Lance.
That is likely the "prime pulse". Search for 'prime' on this page: http://www.megamanual.com/v22manual/mtune.htm#howto
Lance.
"Never wrestle with pigs. You both get dirty and the pig likes it.” - George Bernard Shaw
Re: Injectors clicking when MS is plugged in
Very interesting, so the Prime Pulse is meant to purge any 'air' from the injectors when the key is turned to the start position? We went ahead and tested the voltage on the EV1 connector and both sides show 12v. From what I understand, the MS brain grounds one pin on the connector, completing the circuit and causing the injector to open and squirt fuel into the combustion chamber. Is this correct?Lance wrote:b,
That is likely the "prime pulse". Search for 'prime' on this page: http://www.megamanual.com/v22manual/mtune.htm#howto
Lance.
So in other words, I shouldn't worry about the initial clicking?
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Bernard Fife
- Master Squirter
- Posts: 475
- Joined: Thu Oct 29, 2009 12:54 pm
Re: Injectors clicking when MS is plugged in
bockscar,So in other words, I shouldn't worry about the initial clicking?
Right. As long as it only happens once on powering your MegaSquirt controller up, things are working as they should. Then they shouldn't click again until you get a tach signal (engine is turning over) or you cycle the power to MegaSquirt.
Lance.
"Never wrestle with pigs. You both get dirty and the pig likes it.” - George Bernard Shaw