If the line is not completely frozen, your car's engine may turn over but not start. The car is not getting enough fuel to start, or a little fuel was still left in the line before the tank froze. Again, get your car somewhere warm enough for it to defrost, or simply wait for it...
Long-term fuel trim (LTFT)There is also along-term fuel trim (LTFT), which is a long-term compensation of the base air/fuel ratio. For example, if over time, the engine gradually develops a small vacuum leak, it makes the engine run leaner (more air and less fuel). In a long te...
Over time, sludge, fuel and oil varnish deposits can accumulate inside the PCV valve and will restrict or even block the flow of crankcase gases through the PCV valve hose. When the PCV system is clogged, blow-by vapors won’t get sucked out from the crankcase efficiently and metal engine ...
A clogged PCV vacuum system can cause oil leakage. Blowby pressure builds up in the crankcase: the oil seals blow out. Often the air cleaner will fill with oil: the pressure goes backwards through the inlet filter. A dirty PCV valve can not shut fully when starting, making a hard start...
How can a PCV valve go bad and what happens when the PCV valve goes bad? Over time, sludge, fuel and oil varnish deposits can accumulate inside the PCV valve and will restrict or even block the flow of crankcase gases through the PCV valve hose. When the PCV system is clogged, blow-...