My engine is hard starting?

Tiny
Z2837
  • MEMBER
  • 2002 TOYOTA PICKUP
I got a 2002 toyota tacoma. V6 4 wheel drive. It has about 150k miles on it. The problem is as followed. When I first go out to start the truck it starts no problem. If I drive it for a few miles, run into a store, come out, I turn the key, and it cranks, but wont start till about the 3rd try. It seems to start better if I hold the gas pedal to the floor. I have had plugs, wires, fuel filter changed recently and didnt solve anything. Running out of options.
Wednesday, October 11th, 2006 AT 11:46 AM

33 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
This sounds like one of two problems, first I would service the throttle bore next check the fusel puress theses guides will help us find out what's going on.

https://www.2carpros.com/articles/throttle-actuator-service

and

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

and

https://www.2carpros.com/articles/engine-cranks-excessively-before-starting

Please run down these guides and report back.

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Friday, October 13th, 2006 AT 4:48 AM
Tiny
EMCDIII
  • MEMBER
  • 1 POST
I have the same problem on a '98 Tacoma V-6. Our issue developed after we changed the timing belt, water pump and had the injectors cleaned and re-calibrated. Our rig had 194K on the odometer and prior to this work started on the first crank. The timing is correct and we had the fuel system checked for the (suspected) pressure drop. All was in order. The only thing we figure is an issue with the injectors or perhaps a corrupted gasket in the intake upon reassembly. First cold start in the morning is fine as are subsequent starts when warm provided the vehicle is restarted within minutes after shutting it off. Our problem arises when it has set for 10 to 15 minutes before a restart. Upon restart the atmosphere smells a bit rich. The Toyota now has 218K. By the way it runs smoothly at idle and at speed. Any suggestions?
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Tuesday, October 23rd, 2007 AT 3:14 PM
Tiny
KARENCAREN
  • MEMBER
  • 72 POSTS
Check you fuel pressure. Or even go check all the parts with fuel. Fuel pressure. Fuel pump and fuel filter. This was my problem.
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Thursday, March 26th, 2009 AT 12:21 AM
Tiny
CSHALL
  • MEMBER
  • 1 POST
  • 1996 TOYOTA PICKUP
I have a 1996 Tacoma 4 cylinder with 94,500 miles on it. When I try to start it it takes a while to start. This is more noticable when it has warmed up then when cold. It starts about 98% to 99% of the time, however when driving it the dreaded check engine light came on. Would the plugs be possibly be causing the slow start/ sometimes rough start? Could that also be the reason for the light? I should not that I JUST replaced the battery and that the truck runs fine once started. The plugs have never been changed. Thanks in advance.
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Monday, November 16th, 2020 AT 8:32 AM (Merged)
Tiny
MMPRINCE3000
  • MECHANIC
  • 133 POSTS
I would probably go ahead and change the plugs, although if they are iridium plugs they are supposed to last 100K. If that doesn't help I would check fuel pressure and the coolant sensor. Since this is an OBD-II car, the codes will probably have to be read with a scan tool and must be reset with a scan tool.

This guide will help us fix it

https://www.2carpros.com/articles/engine-cranks-excessively-before-starting

Please run down this guide and report back.
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Monday, November 16th, 2020 AT 8:32 AM (Merged)
Tiny
JROSZEL
  • MEMBER
  • 0 POST
My truck was hard starting cold so I check out the guide to showed me the coolant sensor was bad so I got a new one and installed it it has been great so far, thank you.
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Monday, November 16th, 2020 AT 8:32 AM (Merged)
Tiny
4X4TRUCK234
  • MEMBER
  • 3 POSTS
  • 1994 TOYOTA PICKUP
  • 4 CYL
  • 4WD
  • MANUAL
  • 99,000 MILES
My truck misses sometimes when going down the highway and if you give more gas then it
stops. It also stalls sometimes and is hard to start.
Ive installed a new oxygen sensor, spark plugs, fuel
fiter, air filter, Air flow metering devise
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Monday, November 16th, 2020 AT 8:32 AM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Has the check engine light ever come on? If so you need to pull the codes to see what the computer sees wrong.This can be done manually by going to the underhood diagnostic connector and installing a jumper wire between TE1 and E1.


https://www.2carpros.com/forum/automotive_pictures/1639_yota_2.jpg



Turn key on and count number of flashes of the check engine light.There will be flashes with short intervals that indicate thecodes, with long spaces in between them (See chart)


https://www.2carpros.com/forum/automotive_pictures/1639_yota2_1.jpg



Get back with what you find
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Monday, November 16th, 2020 AT 8:32 AM (Merged)
Tiny
MURPHY89
  • MEMBER
  • 1 POST
  • 1994 TOYOTA PICKUP
  • 4 CYL
  • 4WD
  • MANUAL
  • 199,000 MILES
My truck seems to be burning a lot of oil and doesn't consistently start. Sometimes it only turns once and she is going and others five or six times over before it starts. I am usually putting oil in every 60-70 miles just a few oz. At a time, but almost a quart every tank of gas. Also I have noticed that the thermostat will randomly drop to cold and then back to its normal level, I don't know if they are related but I was hoping someone else might have an insight.

Cheers,
Austin
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Monday, November 16th, 2020 AT 8:32 AM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Perform a compression test both wet and dry tests to identify where its leaking valve or rings and also follow it with a cylinder leakage test. Replace the thermostat
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Monday, November 16th, 2020 AT 8:32 AM (Merged)
Tiny
KELEBOY
  • MEMBER
  • 2 POSTS
  • 1993 TOYOTA PICKUP
  • 4 CYL
  • 4WD
  • MANUAL
  • 100,000 MILES
Everytime I drive for a long time and I park when I go to work or shopping my truck has a hardtiime starting. Ive changed fuel pump, and fuel filter. I have wait for a few hours. Usually at work.
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Monday, November 16th, 2020 AT 8:32 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
When it doesn't start, have you checked to see if it is getting spark and fuel to the engine?
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Monday, November 16th, 2020 AT 8:32 AM (Merged)
Tiny
KELEBOY
  • MEMBER
  • 2 POSTS
[quote="Jacobandnickolas"]When it doesn't start, have you checked to see if it is getting spark and fuel to the engine?[/Quotei have spark
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Monday, November 16th, 2020 AT 8:32 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Is it a good hot blue spark, then it must not be getting fuel. Have you tried using starting fluid to see if that would make it start for a few seconds. That way we could confirm that it is a fuel related problem.

Let me know.
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Monday, November 16th, 2020 AT 8:32 AM (Merged)
Tiny
GAB56
  • MEMBER
  • 6 POSTS
  • 1993 TOYOTA PICKUP
  • 140,000 MILES
My 1993 toyota pickup has trouble starting. It takes 3-4 cranks before it fully starts. I have replaced multiple parts, yet it has done nothing. What do you think it is?
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Monday, November 16th, 2020 AT 8:32 AM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
What are the multiple parts you have replaced?

Was the fuel pressure tested?
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Monday, November 16th, 2020 AT 8:32 AM (Merged)
Tiny
GAB56
  • MEMBER
  • 6 POSTS
I have replaced the alternator, distributor, all new plugs/ wires, and also the starter. I am not entirely sure about the fuel pressure. But this has been doing this the entire time i've owned it. Someone was saying to check the starter relay?
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Monday, November 16th, 2020 AT 8:32 AM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
If the starter cranks, there is nothing wrong with its circuit.

Usually it is the fuel pressure that causes such symptoms. Try cycling the ignition switch ON and OFF 2 or 3 times and test if it is easier to start.
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Monday, November 16th, 2020 AT 8:32 AM (Merged)
Tiny
GAB56
  • MEMBER
  • 6 POSTS
What about the ignition relay? Because the cycling of the switch is not doing anything at all. This has had me stumped for 2 years now. No mechanics seem to know the problem either.
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Monday, November 16th, 2020 AT 8:32 AM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Start with a check on the fuel pressure and power supply to the fuel pump. Ensure the fuel pump is working with sufficient pressure.
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Monday, November 16th, 2020 AT 8:32 AM (Merged)

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