24lb injectors
12-07-2013, 07:58 AM
#31
Advanced
Thread Starter
Right, that's what it said in the eBay ad that you posted 
So-- with apologies for posting back on the original topic-- did you swap the original injectors back in? Does the engine run OK? If not, then something else got messed up. Check for other connectors that might have gotten disconnected in the process.
If it runs OK with stock, but not the Denso's, then there is something different with the Denso's that isn't compatible. Return them or sell them.
If you can find a set of Ford/Bosch M9593-A302, new or used/cleaned/flow-tested then those will work well, or just get your factory set cleaned and flow-tested.
But if the goal is to perk up the car then have a look at Ken's chips for the 85-86 cars. They work with stock injectors or the A302's, but require swapping the the fuel-pressure regulator to the 55 psi S4 regulator. His website is http://liftbars.com
So-- with apologies for posting back on the original topic-- did you swap the original injectors back in? Does the engine run OK? If not, then something else got messed up. Check for other connectors that might have gotten disconnected in the process.
If it runs OK with stock, but not the Denso's, then there is something different with the Denso's that isn't compatible. Return them or sell them.
If you can find a set of Ford/Bosch M9593-A302, new or used/cleaned/flow-tested then those will work well, or just get your factory set cleaned and flow-tested.
But if the goal is to perk up the car then have a look at Ken's chips for the 85-86 cars. They work with stock injectors or the A302's, but require swapping the the fuel-pressure regulator to the 55 psi S4 regulator. His website is http://liftbars.com
Bought them a while ago, but was waiting for intake manifold gaskets, since I wanted to do everything at once.
The car runs fine with the old injectors, apart from the low idle issue at cold start. Replaced the ICV, so that can`t be it. Gotta get a new multimeter to check the Temp 2.
I`ll def. look into the porken chips once the low idle issue is resolved
12-07-2013, 01:30 PM
#32
Rennlist Member
Since my thread appears to attract no attention, I'll address this here.
Can anyone tell me the o-ring size for the injectors? The Ford ones cannot be used since they're too small so I swapped out the ones on my original injectors. They're thicker but diameter wise, only about 0.5mm larger (i.e. They're 14.8ish). I'm reading threads that they should be 16mm in diameter. Original injectors were refreshed by my (old) mechanic who knows 928s. Either they're okay or he installed the wrong o-rings.
Can anyone tell me the o-ring size for the injectors? The Ford ones cannot be used since they're too small so I swapped out the ones on my original injectors. They're thicker but diameter wise, only about 0.5mm larger (i.e. They're 14.8ish). I'm reading threads that they should be 16mm in diameter. Original injectors were refreshed by my (old) mechanic who knows 928s. Either they're okay or he installed the wrong o-rings.
The test is how they fit, should be not too loose and not too tight (lightly greased).
The 87+ (S4/GT/GTS) engines require 16 mm lower o-rings. Roger stocks those.
12-07-2013, 05:12 PM
#33
Thanks. S3s can be a pain to work on since it was a short lived production run and so many parts are just MY only.
I ordered one 85-86 injector kit since one of the o-rings got torn. Will compare, replace and install.
I ordered one 85-86 injector kit since one of the o-rings got torn. Will compare, replace and install.
