WebOct 4, 2013 · 17. Damaged throttle body or intake seals. 18. Clogged or faulty fuel injectors. 19. Loose, dirty, or corroded ignition module connector at crankcase. 20. Faulty TPS, MAP, CKP, O2, and/or CMP sensors. 21. Incorrect valve timing. 22. Weak or broken valve springs. 23. Damaged intake or exhaust valve. 24. The control module may be in limp mode. 25. WebJan 27, 2024 · Q: Backfiring from throttle bodies when under load. 1984 Chevrolet Corvette. So the car was running fine one day. Next time I go to drive it, i hear a popping type noise coming from the engine bay. Sounds like a backfire coming out of the throttle bodies/intake. Car has the crossfire engine, a mild cam, hypereutectic pistons and bigger heads.
05 DT-466EGR popping sound from intake - School Bus Fleet
WebFeb 28, 2011 · If you have an intake valve stuck open, when the fuel air mixture ignites it comes back out of the carb when the valve doesn't close causing the backfire in the carb. If you have an exhaust valve stuck closed (or not opening like with a worn cam lobe) the exploded fuel/air mixture can't leave the cylinder and exits thru the intake valve next time … WebNov 1, 2011 · 2001 Jetta ALH 5sp stock. Oct 30, 2011. #3. Popping back into the intake sounds like a cam/valve problem. Take cam cover off and look at cam lobes and cam follower wear surfaces. Some blowback can come from egr valve being stuck open. See if that thing cycles open and closed with application of vacuum at the nipple. hades hermes friendship
Engine popping noise from air breather - 2CarPros
WebAug 31, 2010 · If it's backfiring through the carb or throttle body and runs, it's because it's out of time and the intake valve is still open during spark or because some huge carbon deposit may be hanging an intake valve up. It could also be a broken part internally, but the engine would tell you quickly if that was the case. WebDec 10, 2014 · I'm stumped! I recently purchased a project 2000 Ranger with the 4.0 OHV engine. It has an odd problem that seems to be an extreme backfire through the intake plenum associated with cylinder number 1 - if I pull the plug wire, the backfire (loud pop or knock) stops. No other cylinders have the same effect. WebApr 14, 2014 · Here is the most common cause of surges and stalls and low idle, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake … brainstorm pvc