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Author Topic: Help w/ popping thru ex.- low gear, 2 to 3k. ??? FasterDamnit Bad Attitude Member # 442 posted                                 OK- Comb in sig. When cruising the pits or street at 2k to 3K (1st or second)it pops a bit out the exhaust. Cruising the highway in 4th or 5th at those rpms and no problems. Just replaced the plug wires. I readjusted the rockers in case I had one too tight. No change. Doesn't seem to affect the power output at WOT- just ran 12.666 at 107.73 last Sat night and had 8 great runs. Maybe the injectors need to be bigger (running 19lber's)? 44 psi FP and 16* initial timing. TIA JL -------------------- '92 LX T5 Looked stock, went 11's 11.90 at 115mph. '65 Mustang 347 www.fordmuscle.com Livin' in the Carolina Pines Posts: 2971 | From: NorCal | Registered: Sep 2001  |  : Stimson _ Member # 51 posted                              Does it pop durring a steady cruise or durring deceleration? Poping through the exhaust is usually due to running too rich (or not enough advance)... many 5.O's do this before they've fully warmed up because the O2 sensors haven't gotten up to operating temp/switching speed yet. I doubt these are your problems though. 24 or 30 lbs injectors and a 24 or 30 lbs sampling tube should be on order for you though.... especially when you get a cam. Posts: 2373 | Registered: Jun 2000  |  : FasterDamnit Bad Attitude Member # 442 posted                                 Both. Once I do a cam it will have 24's. JL -------------------- '92 LX T5 Looked stock, went 11's 11.90 at 115mph. '65 Mustang 347 www.fordmuscle.com Livin' in the Carolina Pines Posts: 2971 | From: NorCal | Registered: Sep 2001  |  : JoeT ¯ Member # 298 posted                                 I call exhaust leak Posts: 6785 | From: San Jose | Registered: Jun 2001  |  : 93Snyper ¯ Member # 1058 posted                                 I'm having similar issue with my stang right now, its a real dog from idle up to about 2500. Did a diagnostic on my car and turns out out to be my MAF. I have a pro-m though. -------------------- Positive Energy Activates Constant Elevation Posts: 147 | From: FiveTen | Registered: Mar 2002  |  : Gear Head JARED Member # 779 posted                              Check that all of your spark plug wires are going to the right spark plugs. -------------------- Support our troops! Posts: 5685 | From: EASTBAY | Registered: Jan 2002  |  : Yellow94GT Mr. 60 FT Member # 431 posted                                 sic91sleeper - If Jim is running 12.6 @ 107 with 2 cylinders missfiring I'm scared! Posts: 5990 | From: Cameron Park, Ca | Registered: Sep 2001  |  : POONSTANG ¯ Member # 79 posted                              Popping like not having enough back pressure??? What type exhaust u got?? Just my .02. -------------------- 98 Chrome Yellow Cobra === Sold 2004 Silver WRX Wagon ==== Modded 1967 Black/Green Mustang Coupe *being resto-modded as we speak* Posts: 933 | From: Lawrenceville, Ga | Registered: Nov 2000  |  : S281 01-570 ¯ Member # 1451 posted                                 I thought popping thru exhaust meant too lean and popping thru intake meant too rich? But check timing. Posts: 13 | From: Central CA | Registered: Jun 2002  |  :

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