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Anonymous Posted on Apr 06, 2014

Car wont start warmkh laser efi

Doesnt start when engine running temp.New plugs,leads,rotor,timing kit.Runs very well always.Starts cold easily,idles fine.Blows black when it does start for couple seconds,coughs a bit then goes

1 Answer

John McNary

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  • Expert 72 Answers
  • Posted on Apr 06, 2014
John McNary
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What year model is it? What engine does it have? Perhaps since Mazda made the car for Ford, you could also search Mazda problems

5 Related Answers

Anonymous

  • 25 Answers
  • Posted on May 15, 2009

SOURCE: Slight miss, starts a little hard then runs fine rough idle from time to time

It sounds like its out of time move the distriutor a little bit

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Anonymous

  • 1 Answer
  • Posted on May 22, 2009

SOURCE: 1990 DODGE D150 WON'T START WHEN HOT

There is a temp. sensor on the exhaust manifold that I just switched out on car that done the same thing it would start when cold but once it was hot and you killed the car it would not start back. When this goes bad its throwing the wrong signal to the computer that it is too hot and allowing it not to crank. This sensor was on the left side of the engine if your facing the car from the front. Also It can be tested with a multimeter to see if it is bad.

Anonymous

  • 580 Answers
  • Posted on Jul 08, 2009

SOURCE: Hi I have 2000 BMW 320i. Lumpy idle when cold and oil light for

Your oil is a little low, and the timing may be off a bit but if it smooths out after warm it is probably ljust
low oil.

chrisbock

  • 199 Answers
  • Posted on Jul 21, 2009

SOURCE: 1997 Nissan hard body pick-up 2.4 won't idle and blows smoke

it soubds like you have a vacum leak problem listen for a "his" with the engine running. you may want to take apiece of hose @2-3ft long put one end at you ear and probe arround the top of the engine arrount the intake manafold and any hoses when you find the his find wher it goes and replace repair the hose. it may also be your pcvvalve thst is stuck it willcome out of the top of your valve cover and plug right the intake hose right before the throttle body

Anonymous

  • 1111 Answers
  • Posted on Dec 16, 2009

SOURCE: 1987 E.F.I. 4 runner wont start cold, a little

sounds like the fuel pump ...yes starting fluid will start the vehicle but consider it will damage your components and you risk many internal issues especially with today's electrical components ..if a constant pressure is not maintained and a fuel pressure test can be done at many part stores to tell you the exact pressure and what it would be at {For Free} i am also considering you to check all the vacuum lines for dry-rot as this will also contribute to this issue try carburetor choke cleaner around the intake manifold and vacuum lines to see if there is a change in the motors performance ...but im nearly 100% certain you will find it is the fuel-pump ..

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Why wont my car start ?

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1990 jeep wrangler runs rih won't stay running replaced map sensor and temp sensor

which engine,? the have up to 3 choices.
rih?
what are the full symptoms,
did you do the full listed 60k mile tune up on car?
sparkplugs,wire, cap rotor/filters? no engine runs right with bad spark
unless it's a diesel.
starts good
runs good or bad hot or cold engine
idle at 800 RPM hot?
stalls> when hot and cold engine
lost of power
bogging
misfire,
learchs>

only stalls , but runs perfect even up hills, at wide open throttle.
fresh gas, or 1 year old?fuel.
can your fast right foot , save the stall, and easily?

ok stalls 101.
1; lost 12vdc to EFI system.
2: lost engine compression.
3: lost spark.
4: lost fueling or floods
there is a simple test for each.
do you want more guesses, or how to do tests.
can do both, but my guessing fails 99 /100 times.

tune it up
do the right foot test. those are always first. on stalls.
always.







0helpful
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Engine wont idle when very cold

Gear and bushing on the end of the distributor shaft is worn out.
0helpful
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I have a 1987 ranger 2.3 EFI and sometimes it will not start when it's cold. after it warms up outside it starts. When it does start it runs great. It always starts when warm. some times it will

Timing belt being off one tooth will not cause this problem but rather loss of power and hard starting all the time,

in the cold it will not start, the engine will spin but wont fire is this correct?

There are many things that can cause this, a little testing will be needed, the first thing that comes to mind with the ford and cold weather is the coolant temp sensor, it give computer a false reading and can cause hard starting or even no start, a scan tool would be helpful to see what temp it is give computer.
The best way to narrow this down to to check for spark when it wont start, a weak coil in cold weather will cause this problem or bad coil wire to cap, but if you can see if it has spark and let me know,
another test is to check fuel pressure, to see if it is getting fuel, and the fuelpump relay,

Let me know if it has spark or fuel when is does not start, good day
0helpful
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Engine starts , and dies. Only when weather is cold.

hello there
I looks like your oxygen sensor,Try to disconnect and then see what the car does?Let me know.You may need to adjust the fuel mixure,seem it is running a little rich that is why the car in idle goes up and down.
[email protected]

proporsche
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Have just put new head gasket in our 4ze1 after blowing a heater hose. motor now hard to start and wont idle but runs well out on the open road. does everything right on the open road - pulls up hills etc...

plug gap 25 th ,too wider gap and it will be hard starting from cold ,as for idle then this could be a vacumn hose perished or not reconnected when head gasket changed ,or a vacumn pipe has been damaged whilst changing the head gasket follow then all back even the best of us inadvertantly damage things or drop a bolt somewhere that always rattles afterwards
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Rich fuel smell in & out of car, causes my eyes to burn.

You changed everything but the temperature sending unit/sensor. That's what is your problem as far as no proper cold start. When first started and cold, the sensor tells the computer to place the engine into cold start mode, engine starts and runs because it's at a bit higher idle and getting a bit more fuel. When warmed up, the sensor, if good, will tell the computer to place the engine into normal run mode now. Have the sensor tested first. If good, the engine is not going into a higher idle and is still getting the fuel but not using it fast enough because it's flooding. Hence the fuel smell. That's the fast idle solenoid on the EFI for this and the A/C high idle when it's running.
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1994 bronco 4x4 302cid efi wont start under cold conditions

i would check your starter it may be seazing from the cold
1helpful
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1990 DODGE D150 WON'T START WHEN HOT

There is a temp. sensor on the exhaust manifold that I just switched out on car that done the same thing it would start when cold but once it was hot and you killed the car it would not start back. When this goes bad its throwing the wrong signal to the computer that it is too hot and allowing it not to crank. This sensor was on the left side of the engine if your facing the car from the front. Also It can be tested with a multimeter to see if it is bad.
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