I have spent a lot of time trying to troubleshoot this problem and I've searched the forum and haven't found a solution so now I've come to ask the experts. Thank you in advance for your help.
I have an MS1 with v3.0 board and firmware v 2.88 (I think). I have tested my MS with the Stimulator and it seems to work just fine. I'm running a GM TBI from an early 90's truck with the 65 lb/hr injectors. The problem is, the injectors are not spraying during cranking or when the key is turned to the position where the fuel pump primes for 2 seconds. Initially, I had the TPS wired incorrectly, and after I corrected this and calibrated the TPS, the injectors were spraying for the pulse prime, but they were flooding the engine so much I didn't even bother to try and start it. At that point I decided to take a break and go eat lunch. About an hour later I came back and turned the key and got nothing. Now I seem to be at the same point I was before. I've set the cranking PW and the Req. Fuel setting per the manual.
Any suggestions?
1 more thing. I did notice that the PWM time threshold was set to over 25, which probably explains the flooding. Could this have done something to the injectors?
Thanks
No Fuel Injector Spray
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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). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
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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sabrown919
- MegaSquirt Newbie
- Posts: 2
- Joined: Mon Mar 01, 2010 9:31 am
Re: No Fuel Injector Spray
Ok...Here's an update:
I checked everything and discovered that I stupidly did not solder on two transistors (Q10 and Q13) for the PWM flyback circuit. I've also thoroughly checked everything else and these were the only things missing. So when I tested it, I have the same problem, no prime from the injectors. Anyone know if I possible burned or shorted something in the PWM flyback circuit because of two missing transitors?
I checked everything and discovered that I stupidly did not solder on two transistors (Q10 and Q13) for the PWM flyback circuit. I've also thoroughly checked everything else and these were the only things missing. So when I tested it, I have the same problem, no prime from the injectors. Anyone know if I possible burned or shorted something in the PWM flyback circuit because of two missing transitors?