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Automotive Repair Car Troubleshooting Topics   Car Troubleshooting   Engine Troubleshooting   Engine Fault Codes   Electrical and Wiring   Transmission Problems Car Repair Topics   Car Making Noises   Car Stereo Repair   Heating or AC Issues   Motorcycles and ATVs   Tricks of the Trade   Truck Repair Advice Site Options:      Login   Sign up here! Latest Forum Post   1989 toyota pickup 3.0 crank no start I have a 1989 toyota pickup 3.0 crank no...   Strut spring orientation and strut mount tension nut 2017 Nissan rogue awd 2.5 L Put in Monro...   Transmission stuck in part, I have tried everything So I'm working on my elderly fathers 201...   2017 dodge journey LED headlights on/off randomly Year of vehicle 2017 Make of vehicle dod...   Kia Soul starter replacement issues! Okay so my car is a 2010 Kia soul 2.0 en...   Please Help - Knock sound & engine fail Hi all, Hoping to get some insight and ...   multiple warning lights 2013 GMC Terrain 130,000 miles 4 cylinde...   03 alero no low speed blower Good day everyone, I have a 2003 Olds a...   04 Chevy 2500hd tail light issues Help!!! I have changed my combo switch...   1999 Grand Caravan Sport not starting. Hi. I'm new here. I hope someone can hel...

engine backfiring Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Engine Troubleshooting jgauger New User Aug 7, 2008, 3:06 PM Post #1 of 5 (1703 views) engine backfiring Sign In I have a 327 chevy motor that has started backfiring through the carb on cold startup. ok when warm or hot. Pushes oil smoke out through the carb. What's up James vinmech Novice Aug 7, 2008, 5:48 PM Post #2 of 5 (1696 views) Re: engine backfiring Sign In Sticky choke? Out of adjustment Choke? Bad points or condenser (if not electrronic ignition)? Timing? Has it been tuned up recently? High milage engine, could be low compression in one cylinder, worn lifters, timing chain/gears. sticking valves or lifters could cause backfiring and smoke issue. Safe to say you'll need to diagnose the problem. More info would help. (Age and milage of engine, what it is used in,all cyl compression,vacuum readings and so on if possible) Just my 2 cents, vinny jgauger New User Aug 7, 2008, 6:29 PM Post #3 of 5 (1693 views) Re: engine backfiring Sign In this engine only has about 5000 miles since complete overhaul. Compression is good, 160 to 180 in all cylinders. MSD ignition new wires, edelbrock carb, replaced the dist. cap, set timing and checked valves. everything ok. It only backfires when engine is cold. It also just started this the other day. I'm stumped. Have messed with small block chevys for 45 years and I have never had one do this. Car runs great. It is a 1934 Ford three window coupe and is maintained a lot better than anything else I own. The timing chain was replaced at last overhaul and the valves have the little rubber boots on the guides. I appreciate suggestions. James Tom Greenleaf Ultimate Carjunky / Moderator Aug 7, 2008, 7:45 PM Post #4 of 5 (1692 views) Re: engine backfiring Sign In Choke pull off probably not pulling off It must crack open once running and senses first intake manifold vacuum or it would flood it with gas, T jgauger New User Aug 8, 2008, 11:59 AM Post #5 of 5 (1683 views) Re: engine backfiring Sign In thanks for trying but Edelbrock carbs do not have a choke pulloff. I think we found the problem. a bad MSD box. bypassed it and it seems to work ok. We'll see, huh. James   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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