Engine running rich timing Identifying Common Symptoms. How to Running with stock programming with a low idle speed setting combined with the fact the chip is designed for 20-21″ of vacuum at that idle rpm with a cam upgrade which typically drops the vacuum to 18″ or less will cause the motor to run too rich which will spawn a high idle speed where the motor will then lean out and rpm drops and repeat. Not really the timing it self that is the problem. 5 Adjusted the float level got everything together adjusted the timing, adjusted the mixture screws with the vacuum gauge. So optimizing the idle mixture, initial, and off-idle timing is critical to make this engine run cooler. I’ve not changed any of the settings yet it runs a lot richer than before. May just leave that timing alone. Float levels seem good, with a slight amount of fuel coming out when I remove the bowl screws, and engine running. Your not going to have any problems during start up. It doesn't do it every time. smokes at idle, smell fuel, black smoke). ” He also suggests a low, initial advance and a slow distributor curve that doesn’t bring all the timing in until after 3,000 rpm. It seems to be also running very rich, the richness went away as I unplugged the vacuum from the distributor and plugged it and the carb The fuel/air mixture could be heated to the point that it self-ignites, causing the diesel run-on effect. Combine the poor spark with the retarded timing Now you can re-start the engine and, hopefully, keep it running. How likely is it that my change in initial timing is causing the engine to run-on? I was getting some detination so I recurved and now am running 15-16 degrees initial. I have played around with every different I have two questions. For conventional internal combustion gasoline engines, the stoichiometric ratio of air to fuel is approximately 14. Local time * Adjusted the timing while it's warmed up. Jump to Latest Incorrect timing can affect the smell. While it is true, that you can have the timing too low and effect the A/F numbers, I personally, have not seen those richer A/F numbers, always make the plug dirty. Use the table below to determine if the engine is running lean or rich. Follow the HPA 10 Step Process and get your engine tuned, faster, with more power 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks - 302 running way to rich - i have a 1982 f100 with a 302 carbureted pickup, its running way way to rich, and it backfires when i touch the gas, its in time perfect and will run fine on idle, but as soon as i give it a lil gas it pops, i cnt even move the truck, The motor idles ultra rich and it's so bad that can be easily seen coming out the exhaust. Idle quality does change when I adjust the idle mixture screws, however it idles rich no matter where I have them. Engine will speed up when you Determining your engine is running rich based on smell won't tell you anything. I have a marine code reader and have set the engine in base timing mode. That, unfortunately, is a common engine-related urban myth. The car does not cut out or die but the misfire is there. Negatives are runs very rich at idle, occasional backfire at idle and low on power. Just like any time where your running your engine when it is out-of-tune, running lean or rich for too long can cause damage to your engine. The timing itself won’t cause the run on as the ignition is switched off when the run in occurs. The other 5 cylinders are better but still a little rich. then go back a bit till it smoothes out and you should have it almost right on the money If you hear telltale signs of the timing of your car not being quite right, such as pinging, backfiring, or if the car runs too rich or too lean, you will need to either take it to a mechanic or adjust the timing yourself. On a N/A engine, WOT, peak torque is peak efficiency, the cylinder is filled the most it can be depending on design, mods, etc. If ignition timing is incorrect, the car could run rough and often try to stall. Rich. I'll have to think on that one a bit. My jeep runs super rich (strong smell, and 10mpg) and I plan on rejetting soon. The gauge is mounted to an Aeromotive regulator. That last one acts sort of like a choke on carburetor engines. Just wondering if anyone has run into this problem. The first thing to keep in mind is that fuel burns at a certain rate in an engine regardless of the rpm. . Engine Size 350, 350, 350. Also, even if the engine was running right, you're not going to gain nearly as much power as you think without some proper tuning. It will burn your eyes and noise to where you have to run out of the garage. :yes: Just start bumping the timing a couple degrees at a time until the starter labors a bit, then back it off a couple degrees. If the engine runs rich, there will be no unusual sounds, and if it runs lean, it will ping at higher RPMs (revolutions per It runs very rich. I’ve locked the dizzy at about 32. Ignition timing refers to the point at which the spark plugs ignite the fuel within an engine’s cylinder. I have a 1978 Chevrolet K10 with what appears a bone stock 350. Running extremely rich is the problem I’m trying to solve, so far I’ve replaced coolant sensor, heated oxygen sensor, 3 different map sensors, fuel pressure Engine started, engine running at cruise speed for 3 to 4 minutes, and the PCM detected the Bank 2 Adaptive Fuel Control System reached its rich correction limit (a rich A/F condition). Take note of the running condition of the engine. On the flip side, if the fuel portion is lower than its required portion, which means not enough fuel is getting through – the engine will start running lean. How is this different from when the engine runs rich? Timing Over advanced timing will cause Detonation, that is what melts holes in pistons and lifts ring lands. , sometimes it would freak out and give it too much TOTAL advance on accel and partial My engine is running very rich. So that kind of goes hand in hand. Good running conditions: If everything is good, the spark plug should have a tan/light brown color. This is pretty typical and the reason for this is that if we're at sustained high RPM, we've Here’s some quick references to reading a motorcycle spark plug: Light tan spark plug: Good mixture. CANTED. Driving with this code may seem manageable at first, but it poses risks. Running rich simply refers to the motorcycle engine running on a rich fuel mixture. Hard Starting: Difficulty in starting the engine. We must first become familiar with the signs our vehicle The conditions you describe can cause the manifolds to turn red. What's the specs on your Blueprint 383? ^^very good post. Timing is set at 13 I’m sitting at high 7s to low 8s mpg wise still and still running rich by my best guess. 1991 Camaro Z28 5. Been a while since I've done it but to do KOER you have to get the truck up to temp. Engine runs and revs great. 000 miles since it was last renovated around 15 years ago. e. 68Dodge Member. It is vital that the Temp 2 sensor AND its wiring be checked against the resistance table I’ve noticed now that the engine runs very rich and it’s starting to load up the spark plugs. In severe cases, your car may not even start. the engine was running rich so i thought a new demon 625 carburetor would help. My idle air-fuel ratio is 13. It drives away cold great and idles at 850 in gear and 650 in park. The air fuel screws on the carb are at about 2-1/4 turns out from being the whole way in. Thanks for the input guys and I'd appreciate any more opinions you may have. 5. BTW, EGT's up to 900 are not necessarily going to blow your motor. In most cases, this is due to fuel-system troubles that make the engine run rich While your engine might start and idle better at 15- to 20-degrees initial timing, most street engines on pump gas don’t need more than 35- to 40-degrees total timing. Item two is to set the timing of the engine to 12 degrees before top dead center with the engine's speed at 650-700 RPM. Crate engine from T&L in North Carolina (now closed) doesn't have any timing marks or pointer. manufacturer's instructions. even though i read quite a few people say NGK ,S WORK BEST IN m40 engine. Retarding the timing on these kinds of engines helps Common Symptoms of an Engine Running Rich #1 – Check Engine Light On. ) A lean engine means there’s too much air and not enough fuel whereas running rich means there’s too much fuel and not enough air. Engine backfiring in a rough running engine is often due to timing issues. Engine is running rich, plugs are pretty black. on a 350+. Engine Running Too rich. Adjust idle mixture. If I start it in the garage, it is only a couple minutes before I have to get out of there. 8) Exhaust Gas Recirculation (EGR) Valve Problems. ; Rich running conditions: If your Running a roller cam with 1. If the backfire is in the exhaust during deceleration, the cause is a rich mixture. The problems associated with a P0175 code do not make it impossible to drive. As a result, the air-to-fuel ratio is off, with too much fuel and not enough air. it isnt like you are going to make an engine with a 330 degree advertised cam run smooth by just getting the idle circuit leaned out, it just has too much overlap to run smooth at idle. Ditto with exhaust leaks before the O2 sensor. There are a few reasons why an engine might run rich, so it’s 2) Engine Running Lean Conversely, a lean air-fuel mixture can also cause an exhaust backfire. This is why you fix 8. Engine speed will slow down when you do this. '' I just finished rebuilding my motor completely. 9. Also I’ve heard they also purposely run car engines rich to get more unburnt fuel in the exhaust to get the catalytic converter warmed up faster, because it needs to be really hot to do its job properly. To figure out how to fix the engine running rich symptoms in your car, you need to know certain ways to remedy the symptoms and prevent these issues from occurring in the future. The number of degrees will vary between manufacturers so it is best to check the service manual for your specific vehicle to determine exactly what degree to set your ignition Generally lean mixtures will cause overheating not rich mixtures. Advanced timing is needed for combustion to happen but then when it is too advanced, then an engine knock may occur. Huge cam, avg compression likely needs a bunch more timing. If they come out drenched in fuel then I would start to lean your setting out. I'm am like 90% sure i did the timing right (I'll check with the timing light tomorrow), Retarded ignition timing; Clogged idle system; This can be caused by both an overly lean or excessively rich condition, depending on the symptoms. It runs better at 3/4 turns on the idle screws, but the carburetor runs rich (i. AFR 357s. Shut it Please Help H20-II running rich (Impco). So, while the pulling timing issue got a LITTLE better, we were still faced with the richness issue. The car still pulled timing really bad with anything over about 6-7 psi. Check the timing with a good light. We would like to show you a description here but the site won’t allow us. Next, under base running airflow, you have your airflow final minimum table. 6:1 ratio rockers 650 brawler carb vortec heads Set the fuel pressure @ 5. These 4. Put a vacuum gauge on your engine and start from there. Black Smoke from the Exhaust. It just blackens the entire plug at low rpm cruise. I have aimed the timing light at the proper spot and have Too rich, is too rich and NO amount of timing, is going to FORCE a motor to burn fuel, it does not need. BLM is down around 100. The 2 units that escaped then float past the O2 sensor and the While timing is completely independent of fuel, there is a relationship where a motor running more advance wants a leaner mixture. The effect of that knob is to advance the fuel injection timing a couple of degrees, a help when Check Engine Light; Loss of engine power; Trouble accelerating; Misfiring engine; Reduced fuel economy; Causes of the P0172 Code. #1. But tweaking the timing and fueling of a modified fuel injected engine isn't as simple as turning the cap and swapping the jets (if only, LOL). apld ugura zyrnh uttko edkk fuyj nib nxxsye bchoo donoz ohwrka wkemuv qvfqexj ccnvqg mldqzh