Questions & Answers for: lean start

...lean to start properly. If the engine doesn't start at the factory setting you probably need to take the carb apart and clean it and put a new kit in it. remove the muffler and see if there are score ...

Codes 171 174 2002 gmc sierra 5.3 Codes 171 and 174 showing lean in both banks. Changed plugs and wires, truck started running good. Codes came back a couple of hours later. Truck still runs fine. ...

...lean. after the first start of the day it runs smooth until it sits in the cold over night. this only happens in the winter time. a code for lean or lean condition typically indicates a vacume leak ...

...start and lean O2 readings You need to be a car doctor,not a mechanic for this. You could also have EGR Valve issues,letting in too much exhaust gases A worn TPS Sensor and loosing throttle position ...

Bank one to lean and bank two is to lean start by changing you air and fuel filter might be running to lean on air or fuel

...lean wants to start but wont tur over. OBD pocket scan says to lean. could compression be a problem I doubt it. Usually if you have a trouble code for lean mixture, the fuel pump pressure is low or ...

heads when first started, turn red. This is when I use the choke to start. After about 5 min. the red goes away. Too hot means too lean (lean in fuel). If you have custom pipes you must sync the carbs

...start what can it be please can Anyone help Backfires usually caused either by timing or spark jumping issue, or, lean fuel mix. Might try starting at night with helper cranking and you look under ...

.... AFTER 20 MI. OR 30 MI STALLS AND DOSENT START RIGHT AWAY. Its Lean when you have more air then gas. Its Rich when you have more gas then air. So if its too lean check your air supply, filters,

fixed.? A lean mixture is causing this fault, It is important to have this repaired. if lean only on start not a big fault. if lean on running under load it will burn exhaust valves and top of pistons