help identifying injectors
Thread Starter
Registered User
Joined: Aug 2008
Posts: 46
From: CFB Bagotville, QC
help identifying injectors
I bought a set of injectors advertised as SVO 36 lb injectors.
After installing my stroker with these injectors, my car is running horribly. It's rich to the point of bogging and smells like fuel. I've chased vacuum leaks, checked the ECT, 02 sensors, replaced the MAF with a known good one etc. All that was running great before the stroker swap. I have been assured that my tune is correctly set for the injectors by my tuner.
Do these look like SVO 36 lb injectors ? Do all 36 lb SVO injectors have a dark blue top (I can't find a picture of one) because I don't find these look dark blue at all. I'm guessing there's something wrong with the injectors, the tune or both.
Is there a way to test if an injector is sticking open ?
After installing my stroker with these injectors, my car is running horribly. It's rich to the point of bogging and smells like fuel. I've chased vacuum leaks, checked the ECT, 02 sensors, replaced the MAF with a known good one etc. All that was running great before the stroker swap. I have been assured that my tune is correctly set for the injectors by my tuner.
Do these look like SVO 36 lb injectors ? Do all 36 lb SVO injectors have a dark blue top (I can't find a picture of one) because I don't find these look dark blue at all. I'm guessing there's something wrong with the injectors, the tune or both.
Is there a way to test if an injector is sticking open ?
Thread Starter
Registered User
Joined: Aug 2008
Posts: 46
From: CFB Bagotville, QC
yes, I'll check it out when I get back. The only other place I've seen similar injectors was on a post on ls1tech.com but it's still inconclusive.
Found the tune didn't account for svo injectors (if they are indeed 36# SVOs) being at a lower pressure. Could the difference between 39.2 PSI for the SVOs and 43.5 PSI for the GMs cause it to run rich to the point of bogging at idle ?
Found the tune didn't account for svo injectors (if they are indeed 36# SVOs) being at a lower pressure. Could the difference between 39.2 PSI for the SVOs and 43.5 PSI for the GMs cause it to run rich to the point of bogging at idle ?
Administrator
Joined: Nov 1998
Posts: 71,098
From: Hell was full so they sent me to NJ
The flow rate difference due to the difference in the pressure used for the flow rating is 5.4%. That's not enough to cause the problems you are seeing. The PCM can pull out up to 15% fuel using the long term fuel corrections.
Administrator
Joined: Nov 1998
Posts: 71,098
From: Hell was full so they sent me to NJ
Check this list:
http://users.erols.com/srweiss/tableifc.htm
Go to the "FORD" section (more than 1/2-way down the list). There are a lot of injectors that have the "9F593" in their designation. Looking through the list, you may find a tie to one of the other numbers as well.
http://users.erols.com/srweiss/tableifc.htm
Go to the "FORD" section (more than 1/2-way down the list). There are a lot of injectors that have the "9F593" in their designation. Looking through the list, you may find a tie to one of the other numbers as well.
Thread Starter
Registered User
Joined: Aug 2008
Posts: 46
From: CFB Bagotville, QC
thanks. the tuned was changed to account for the ford PSI. It helped a lot but it still needs a little tweaking. It still has an erratic idle and runs a bit rich.
I couldn't find any injector that matches it.
I couldn't find any injector that matches it.
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