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Misfire warm 03 golf, misfire until warms up completely, then purrs like a kitten. Seems worse when the weather is damp. I replaced plugs and wires, a vac hose that had somehow been severed, and fuel filter. If the car was driven the night before and started in the morning it runs fine.

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  • Volkswagen Master
  • 803 Answers

Possible an injector leaking down, saturating cylinder and spark plug., causing a misfire on startup and clearing up after it runs for a while.

Posted on Feb 11, 2014

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: starting in damp weather 1993 240 wagon, auto/od, 235k miles

perhaps you need a new cap and roter a new spark plug wire set. they don;t like moisture. also check to see if you have any broken or leaking vacuum hoses. the worse case senerio would be that your head gasket is leaking--at cold temps a little antifreeze will enter until everything warms up and it seals shut due to metal expanding. but since you say it's cold weather only--this probably wou;dn't be the case. good luck.

Posted on Dec 28, 2008

txkjun
  • 409 Answers

SOURCE: 2000 silverado 4.8 v8 runs bad when it is cold out side.

Try replacing the coolant temperature sensor for the injection system.

Posted on Jan 11, 2009

  • 31 Answers

SOURCE: 2004 F150 5.4L engine misfire

The concern is likely caused by the coil which sits on top of the spark plug. Your P0301 indicated misfire on cylinder 1. Your P0316 indicated it occurs on the first 1000 revolutions. Your P0171 indicated lean on bank one. Bank one includes cylinders 1,2,3 and 4. Your lean code is strange but could be related to misfire. I would recommend swap the coil on number one with number two. Clear the code and drive it. I would expect to see a P0302 which indicates the misfire traveled with bad coil. good luck.

Posted on Mar 03, 2009

  • 2 Answers

SOURCE: 3.1 engine 96 misfires trough driving speeds and idle

i had a 94 that ran into problems like that with very rough idles and misses. i get about five different codes from injectors to oxygen sensor. turned out my negative wire from the battery was so corroded inside the insulation it was causing all sorts of problems. bought new cable and ends from canadian tire $40.00 and installed (had to clean the connection to the block with sand paper) but fixed all my problems after that.

cheers

Posted on Apr 17, 2009

  • 245 Answers

SOURCE: Engine stalls

sounds like one of a couple things could be causing you problems first would be the fuel pump may be wearing out. these are a mechanical pump and should be producing over 35psi at the injection pump if you have a way to put a gauge on it you could check this under full throttle is when you want to watch it though. fuel gauges are quite inexpensive and are handy to have in the truck anyway. another thing i have seen cause this is the check valve on the discharge of the pump there is a spring and ball in the return line banjo fitting that holds the fuel pressure at a constant 35 psi when that gets weak it allows more fuel to return to the tank which will let it run at lower rpm's but not under full load. hope this helps

Posted on May 18, 2009

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2004 F150 5.4L engine misfire


The concern is likely caused by the coil which sits on top of the spark plug. Your P0301 indicated misfire on cylinder 1. Your P0316 indicated it occurs on the first 1000 revolutions. Your P0171 indicated lean on bank one. Bank one includes cylinders 1,2,3 and 4. Your lean code is strange but could be related to misfire. I would recommend swap the coil on number one with number two. Clear the code and drive it. I would expect to see a P0302 which indicates the misfire traveled with bad coil. good luck.

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Starting in damp weather 1993 240 wagon, auto/od, 235k miles


perhaps you need a new cap and roter a new spark plug wire set. they don;t like moisture. also check to see if you have any broken or leaking vacuum hoses. the worse case senerio would be that your head gasket is leaking--at cold temps a little antifreeze will enter until everything warms up and it seals shut due to metal expanding. but since you say it's cold weather only--this probably wou;dn't be the case. good luck.

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