Hard starting...

M

MustangGT95

New Member

Jul 29, 2003

407

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Feb 20, 2007

#1

• Feb 20, 2007

• #1

Lately my car has became pretty hard to start. Takes a lot of cranking to get it to start.

I have changed the plugs, wires, cap, rotor, coil, and fuel filter so far. Still doing the same thing. Also changed the injectors recently. (whole different problem).

I just can't seem to figure out why its so hard to start now. Its been 10-20 degrees so I thought maybe that was it. But it was 55 today and it had the same issue.

Could the O2 sensors cause this? I was going to replace those next...

 

parchisi

New Member

Apr 13, 2006

519

1

0

New Mexico

Feb 20, 2007

#2

• Feb 20, 2007

• #2

My car usually cranks for a long time too, especially when its warm. Its been tuned though and no other problems, so I just chalk it up as a loss and deal with it.

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

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129

Feb 20, 2007

#3

• Feb 20, 2007

• #3

Is the issue better, worse or indifferent if the car has sat overnight?

 

M

MustangGT95

New Member

Jul 29, 2003

407

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Feb 20, 2007

#4

• Feb 20, 2007

• #4

Longer it sits the worse it is. I am worried about it because up till 2 weeks ago it started very quickly. Battery was getting weak so I changed it also. Cranks faster but still takes awhile.

After I have been driving and restart it starts right up like it used to.

 

Bosko5.0

Active Member

May 18, 2006

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longwood, FL

Feb 20, 2007

#5

• Feb 20, 2007

• #5

can you hear the fuel pump prime? try turning the key on for 3 sec then off then try to start the car.

 

Bosko5.0

Active Member

May 18, 2006

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longwood, FL

Feb 20, 2007

#6

• Feb 20, 2007

• #6

try to turn key on 3 secs turn off then start car.

 

Bosko5.0

Active Member

May 18, 2006

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longwood, FL

Feb 20, 2007

#7

• Feb 20, 2007

• #7

try to turn key on 3 secs turn off then start car.

 

Bosko5.0

Active Member

May 18, 2006

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longwood, FL

Feb 20, 2007

#8

• Feb 20, 2007

• #8

try to turn key on 3 secs turn off then start car.

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

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Feb 21, 2007

#9

• Feb 21, 2007

• #9

Bosko5.0 said:

try to turn key on 3 secs turn off then start car.

Click to expand...

Quoted in case this sentiment was missed.

I agree and it's where I was going with my last question.

Do try the 3 primes before starting idea. Or put a FP gauge on the Schrader valve and watch pressure after one prime and see if it's above 30 PSIG.

I might also check the ECT sensor to make sure it's not way off base. I only have specs for it going down to ~50*F however (we could probably extrapolate a value if needed).

Good luck.

 

TheDamned

"I am Canadian and Damned for it!"

Jul 22, 2003

457

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48

Montréal, Québec, Canada

Feb 21, 2007

#10

• Feb 21, 2007

• #10

Check the fuel pump, I had a similar problem, replaced the pump by a Walbro and tadam.

 

M

MustangGT95

New Member

Jul 29, 2003

407

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Feb 21, 2007

#11

• Feb 21, 2007

• #11

I suspect it is fuel related since its getting terrible mileage.

It has a walbro in it but its probably been 4-5 years since it was replaced.

 

M

MustangGT95

New Member

Jul 29, 2003

407

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Mar 10, 2007

#12

• Mar 10, 2007

• #12

I went ahead and ordered a new 255lph pump. Just incase I get that nitrous kit I've been wanting

 

M

MustangGT95

New Member

Jul 29, 2003

407

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Mar 22, 2007

#13

• Mar 22, 2007

• #13

Walbro 255 fixed it. Starts on the 1-2 revolution again. Nice.