Author
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Topic: Misfires..
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RonaldDregan
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Member # 9587
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posted
I just put together a 302 with a cam, lifters, rockers, rollers, upper and lower cobra intake, alum heads, bbk fuel rails, 19lb injectors, 65 mm throttle body, fuel pressure regulator...ok thats enough for now. The car sounds great, but when I accelerate, the car misfires..I have been told that there isnt enough fuel getting to the motor. I have 24 lb injectors waiting to be installed, but the problem is, I have looked everywhere for a reputable shop to do the installation, as well as tune it..someone please point me in the right direction.
Posts: 16 | From: Fairfield | Registered: Nov 2009
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50 Deep
Jockin 03 Cobras
Member # 6216
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posted
whats your adjustable regulator set at with the vacuum line off engine on?
-------------------- Signature Wheel Ford Representative Email: Terrance@Signaturewheel.com Instagram: @Signature_Wheel_Mustang Web: www.SignatureWheel.com
Posts: 6043 | From: sacramento | Registered: Nov 2005
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JohnB
Tech Moderator
Member # 969
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posted
If you want to bring it by, I'm in Fairfield as well. Send me a pm if interested.
-------------------- 1965 Shelby Cobra 1993 Cobra 2012 F150 Raptor 2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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92stangLX
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Member # 3252
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posted
quote: Originally posted by 50 Deep: whats your adjustable regulator set at with the vacuum line off engine on?
+1 check fuel pressure. Also, what pump are you running? Hopefully not the stock one
24lb fuel injectors would be better on that combo. You will need a matching MAF.
Also, consider upgrading your ignition system.
Posts: 5302 | From: San Francisco | Registered: Sep 2003
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turbo50
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Member # 6700
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posted
what plugs and what are they gapped at?
-------------------- .........when was the last time YOU built something with YOUR own hands?
I offer quality sidework at reasonable prices. PM ME
Posts: 7606 | From: Discovery Bay, California | Registered: Apr 2006
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RonaldDregan
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Member # 9587
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posted
The adjuster is set at stock, which is about 40 psi I think...I had the 24lb injectors in first, but the car wouldnt start so i put the 19s back in...it is the stock pump for now and an upgraded mass air meter. Honestly, I haven't been able to find a good shop since I moved to Fairfield, So I am really tempted to sell it and cut my losses!
Posts: 16 | From: Fairfield | Registered: Nov 2009
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Duncan Motors
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Member # 7045
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posted
i dont know what is considered good shop? but im in vallejo and know a thing or to on these cars,s. and john b is in faifeild also, so i wouldnt give up hope just yet. 707 554 4988 is the number to my shop.
Posts: 6310 | From: Vallejo | Registered: Sep 2006
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JohnB
Tech Moderator
Member # 969
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posted
Check the pin connectors for the FI harness. Sounds like they are either VERY dirty or not fully connected/seated. A car will start with nearly any fuel injector in it; injectors aren't the issue....wiring is.
-------------------- 1965 Shelby Cobra 1993 Cobra 2012 F150 Raptor 2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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RonaldDregan
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Member # 9587
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posted
I just got a fuel pressure gauge installed and increased it to 45psi..the car runs alot better, but it still needs work. Thanks for the advice, I will try and drop by the shop when I have time..
Posts: 16 | From: Fairfield | Registered: Nov 2009
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svt_etr
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Member # 9616
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posted
wish there was a good shop close to me in san jose.
good luck fixing your car!
Posts: 33 | From: bay | Registered: Nov 2009
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