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altima 93 won't very hard start on engine cold
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ionmachiman
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May 15, 2009, 8:49 AM
Post #1 of 8
(2784 views)
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altima 93 won't very hard start on engine cold
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Hi,
My car is a nissan altima 1993, 2.4l, automatic transmission, 200000 Km.
The problem is the car starts very hard when the engine is cold, and only after lots of cranking;
after it starts it works with no problems, there is no stalling, keeps rpm constant with no hesitation
or erratic increasing. It also accelerates ok, and everything else looks to be fine.
When the engine is warm it starts with no problem, even a couple of hours after i stopped it.
What should I check and how?
Thank you
(This post was edited by ionmachiman on May 16, 2009, 9:16 PM)
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Guest
Anonymous Poster
May 15, 2009, 2:57 PM
Post #2 of 8
(2777 views)
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Re: altima 93 won't very hard start on engine cold
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i checked the codes with engine warm and there shows no troubles; should i check again with the engine cold???
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autojoe
User
May 15, 2009, 4:25 PM
Post #3 of 8
(2774 views)
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Re: altima 93 won't very hard start on engine cold
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possible bad coolant temperature sensor.if have a scan tool look at sensor with engine cold and compare to ambient temperature.If no scan tool check resistance of sensor and compare resistance value to temperature of coolant....with cold would be close to ambient temperature.If you need chart I can email you one.most of the time on obd1 vehicles there are no codes.possible low fuel pressure?good plugs and wires?if you open throttle a little will it start easier?
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ionmachiman
User
May 16, 2009, 9:09 AM
Post #4 of 8
(2766 views)
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Re: altima 93 won't very hard start on engine cold
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hi
checked coolant sensor and is ok
checked the fuel pressure:
-installed the pressure gauge
-key on engine not running (i heard the fuel pump zooming) no pressure
-after other couple of key on engine not running, the gauge showed about 30 psi (normal about 40) then
went down to 15
-changed the fuel filter
- key on couple of times (fuel pump is zooming) nothing on gauge
weird
what
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ionmachiman
User
May 16, 2009, 9:15 AM
Post #5 of 8
(2766 views)
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Re: altima 93 won't very hard start on engine cold
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-checked coolant sensor and ok
-installed fuel gauge, key on (engine not running, fuel pump is zooming) nothing on gauge; after couple of trials
about 30 psi on gauge going down (not very sure because i was alone, but there was some pressure but i'm not sure about levels; anyway under the normal)
-changed fuel filter
-testing again couple of times nothing on gauge (fuel pump is zooming)
???
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autojoe
User
May 16, 2009, 9:25 AM
Post #6 of 8
(2761 views)
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Re: altima 93 won't very hard start on engine cold
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what do you mean fuel pump is zooming?Is the gauge working?Try on another vehicle.If fuel pressure is good and then drops then possible bad fuel pump check valve/faulty fuel pressure regulator/leaking injector.
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ionmachiman
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May 16, 2009, 9:02 PM
Post #7 of 8
(2753 views)
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Re: altima 93 won't very hard start on engine cold
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zooming like making zoomzoom
ty guys, it was so amazing what i found
a hose in the fuel tank was somehow turned and squeezed;
when cold it let out only a little gas, so the engine started after a lot of cranking;
after starting, as the gas was sucked in + warming up, the hose was dilated just enough to have a good start
after i checked the gas output from the tank, i thought that the pump is defective;
i opened the tank and h'seen the hose turned and i thought to check it;
i think such a circumstance is very rare
ty again
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autojoe
User
May 17, 2009, 9:22 AM
Post #8 of 8
(2743 views)
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Re: altima 93 won't very hard start on engine cold
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seen once before but is rare.Glad you got it fixed.Thanks for letting us know fix.
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