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Why wont the engine start even with a new fuel pump pump works but no pressure sometimes it will run and some time it wont engine is a 3900 1996 olds?
Wiki User
∙ 14y ago
Did you change the fuel filter? Have you checked the fuel pressure regulator?
Wiki User
∙ 14y ago
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Car takes about 3 or 4 tries to get started The engine seems to be trying to start but it just seems to fail When you do get the car started it runs great has good power and idles fine.?
It may be a simple leak-down in the fuel pressure regulator. Sometimes when the pressure regulator leaks there won't be pressure to the injectors when you try to start the engine. It's not a big deal, and certainly not worth spending a lot of money on the problem if it's nothing more than this. Test the idea by turning on the key for a few seconds, turn it off, then try to start the engine. If the pressure regulator is allowing the fuel pressure to leak down, this simple procedure would allow the fuel pump to build pressure BEFORE you try to start the engine. Then when you DO try to start it, hopefully it will fire right up.' Good luck. I hope it works for you.
How does a SI engine works?
You put petrol in it, start the engine, and it goes.
Car won't start battery good no sound sometimes it starts sometimes it does not?
sounds like the fuel pressure regulator, which is made into the fuel pump in the tank of most new cars and truck, or you could have dirt in the fuel line, first change the fuel filter, and see if this helps. Need to know if the starter works and cranks the engine but the engine doesn't start at times or if the starter doesn't crank the engine at times. It is not clear.
What does pressure have to do with how a car engine works?
High pressure is created by an exploding gasoline-air mixture. This pressure pushes the cylinders of the engine down, doing work that moves the car.
How do I diagnose ford engine problems?
The process of elimination works. If you have a check engine light, start there.
Why will your car not start after setting to long?
Your fuel pump may not be holding pressure,try turning the key on 2 - 3 times before you start the engine (this only works on vehicles electric fuel pumps). If you have an engine with a carb engine get a fuel filter with a check valve and install it. That will keep the fuel from draining out of the carb while it sits.
You just rebuild your v6 engine.... you noticed it making a ticking noise when at idle but can't hear it when driving may be highway noise. Engine sometimes lacks power but sometimes works fine.?
Have valves adjusted.
2001 Ranger XLT the oil pressure gauge sticks at zero when it is cold. When the engine warms up the gauge works fine How do you fix this?
I would start by replacing the oil pressure sending unit. If that does not correct the problem, I would look closely at the gage itself. If you hear any valve train noise at cold startup, you need to have an oil pressure test run to make sure you actually have good oil pressure when starting the engine cold. Possibly the gage is correct and you do have 0 oil pressure when cold.
Can you start a sentence in but?
Sometimes. BUT it depends on the sentence you had in mind. Very rarely the sentence works with but as the starting word.
Why engine will turn but wont start It starts fine at first then difficult to start afterwards It has now stalled will turn but not start anymore Fuel pump works batt and charging works?
crank/cam sensor issue maybe?
2000 ford windstar stuck in park even when you turn the car on what can be the problem?
A fuse can cause car to be stuck in park. try this. turn ignition switch on but do not start engine. then put transmission in neutral. then start engine. now try putting in gear. if this works,check your fuses.sometimes after doing this the car can be put in park and will work.doing this will sometimes just reset the switch
94 blazer does not start but if put start fluid starts?
its a bad fuel pump. it works enough to keep it running but it isn't putting out enough pressure.
