Engine is hard starting

This sounds like a dirty throttle bore here are two guides to help fix it.

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

and

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

Please run down these guides and report back.

Thank you that did the trick, I love this site

I have a 2005 Ford F250 6.0L diesel. It has developed a hard start condition. When cold it will turn over as normal. It will fire once at about the same number of revolutions as it always did. If you continue cranking it may or may not start. If it starts it will buck and skip for a few seconds and then somewhat smooth out. I replaced the glow plug module. Stilll starts the same. If I plug it in, it will start as normal. The code P0611 keeps coming back after I clear it.

Hi, one of the injectors has shorted not allowing the module to work properly, uses an ohm meter to test the injectors, replace the one that has failed, note special tools are required for this job. This guide can help us fix it

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


Please run down this guide and report back.

i have a 2003 ford f250 with a 6.0l and only in the morning a have trouble starting it. it takes me about 5-6 times of hard cranking to start

hey does the glow plug light come on, they will have stored trouble codes but no check engine light. It sounds like the glow plug relay has failed it is pretty common. check make sure your battery connections are good and clean.

Truck got hard to start out of the blue, but when I press hard on the brake pedal every now and then I can hear a leak or weird noise. The fuel pump is been replaced and I’ve kept up with every maintenance issue and ran BG since the time I got the truck in 2002 It does run like a top. Also, I am getting a whining noise at low RPM’s I don’t know if it’s an air leak but it sounds like it’s coming from the transmission. I’m hoping it’s all connected.

Welcome to 2carpros.com

Usually a delayed start is related to fuel pressure drop off. Try this.

1) From the off position, turn the key to the run position (engine off) and count to 5

2) Turn the key off.

3) Do the above 3 times. On the 4th time, see if it starts easily.

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Or, you can check fuel pressure drop off when checking pressure.

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

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As far as the noise, Ford power steering pumps make a whining noise. Make sure the fluid is clean and full and see if you notice any change in the sound when turning the steering wheel.

If you could, let me know if any of this helps. Also, I need to know what size engine you have. Please keep in mind, with the number of miles on the engine, compression may be getting lower. That can cause a delayed start as well.

Let me know.

Joe

Thanks That was it

JACOBANDNICKOLAS is one of our best! Use 2CarPros anytime, we are here to help. Please tell a friend.

my super duty wont start in the cold weather i have the 7.3 liter turbo diesel also i have green fluid coming out of where you drain the water in fuel. i have put diesel 911 in the tank. i had a vehicle jump starting my truck while i was trying to crank it over batteries have 12.34 volts it was around negative 25 here last night and i am not able to plug the block warmer in. hopefully yall can help or at best give me some pointers thank you sorry no donation poor college student

First try and find a way to plug that thing up. Check your fuses because there is a fuel heater where the fuel filter is on top and sometimes that shorts out.(easy stuff first) also test your glow plugs and glow plug relay.

The green fluid is the diesel fuel jelling up

7.3 diesel cold start

Try running a little "DRY GAS" in the tank and you can pour soem down the intake as well.
Diesel gas collects H2O quickly and can damage the motor.

Have a 97 Ford F250 Diesel. Every time you try to start it, it cranks 15-30 seconds before it finally starts. Even when it's warmed up, it takes that long to start. We have replaced glow plugs, relay, fuel pump, everything we can think of and still have the same problem. What else do we check?

I have had the same issue with my 97 f250. I would say to check your ground wire to the relay with the key in the start pos nand the eng not running should be good gnd i believe its the small purple wire. its not just like a regular relay, the gnd wire is the signal wire. also you may check the oil temp sensor this controlls how long/when the glow plugs come on. also chk oil fou fuel smell could be injectors bleeding off. worst case scenario could be an ecm issue. you can always put in a rocker switch to relay and bypass the ecm but it would be more beneficial to correct b/c your glow plugs come on even whiled driving at times. hope this helps.

My '97 Ford F250 I leave it for more than a day without starting it. It just keeps turning over for 30 sec-1min with the occasional sputter before finally starting up.

Why would the truck start hard after its been left without starting for 1+ day but start fine after the first hard start?

After that, it starts up just fine until it's left for 1+ day again.

I've tried dry gas to get rid of any water in the line.

Have the fuel pressure checked. The line could have a leakage somewhere resulting in pressure drop.

The next time you want to start after sitting for a day or more, try cycling the ignition switch ON for two seconds anf OFF. Repeat the procedure 3 times and try starting to see if it helps.

Is the MIL (Check Engine Light) indicating?

7.3 power stroke - Wait to start buzzer sounds when giving trouble. what could cause this?

I just bought this truck 80% of the times of it runs great but the other times it starts to give this trouble. it does this in gear and in neutral. I have owned two Cummins diesels in the past but I have never had any problems.

Check compressions hot and check fuel delivery system, check for contamination in the fuel. I would be looking at the lift pump and the high pressure pump. power strokes have a habit of failures with these items.
you need a good truck shop that can diagnose it correctly for you and give you a bid.

yes, Cummings are great engines with very little issues.

I have a 7.3 turbo diesel in this truck.It will not start when its cold in the am unless I plug it in to heat the motor. After that, its ok. Just in the morning it will not start. The wait to start light comes on for the glow plugs and goes off, but will not start..Could there be a bad fuse link at the starter relay motor??The manual shows 2 14Ga. fuse links at the starter moter relay.. Where is the starter motor relay and how can I check to see if the fuse links are good or bad????. I will donate to you folks when I get my social security check on the 1st of march.. THANK YOU..

the first thing you need to do is verify fuel pressure with a gauge,you can also unscrew the lid on the fuel bowl and make sure it's full of fuel.jeff

i'm having trouble getting my 7.3l deisel engine witch i just installed to start, upon further invesigation i found i was sucking air in through the exgaust and blowing out my intake. so i did a 180 on my cam shaft retimed everything. and now i am sucking air in through both ports. both the intake and the exgaust. i am baffled that i don't seem to be have air comming out of any port. i am looking for any thoughts i can get thanx for your time

sincerely,
daryl

may not be but, your engine is cranking in the wrong direction.(backwords) My KW can stall/start in the wrong direction resulting in exhaust coming out the air cleaner. worse is that the oil pump is not pumping to the important parts. must shutoff imediatley and restart. look at rotation direction. good luck.

460 V8 - hard to start - have to crank many times and press on gas pedal all the way. Seems to not be getting any gas at startup. Have fuel injection. Truck sits a lot and one fuel tank went dry. I got it started and filled both tanks about 70%. Starts with a bit if play in morning (60 degrees) but very hard to start in afternoon (80 degrees). Once it starts - drives ok. Shut it off - hard to start again. To trouble shoot - will replace fuel filter first.

Is there a fuel reset switch on this model?

Where is the Fuel relay?

Is there a fuse to control the fuel pump(s)?

What should I be looking / listening for?

Things that can hard start, Fuel pump, listen when you first turn the key to on, not start, just on, you will be able to hear it run fo 2-3 seconds, Idle air control valve, it's bolted to the throttlebody, TPS, also on the TBI, Vacuum leaks, clogged PCV, after you start it, check for vac leaks like this get a can of spray gumout, spray the vac lines and maniflod area, when the idle changes, youve found the leak! You want the engine running and spray on the outside but do direct the stream onto the hoses, if it is a vacuum leak, the engine idle will change speed, then you have detected a leak, repair the vacuum leak and see how it runs! If that doesnt do it, you may need a new idle air control valve, it's bolted to the throttlebody
One last this is the engine coolant temp sensor, this acts like a choke for fuel injected vehicles....

I have replaced new spark plugs and wires, new ignition module and switch new, starter new solenoid, new MAP sensor and new battery. need help please.

Good morning,

Did you check the fuel pressure to the fuel rail? It will cause a extended crank time for the engine to start.

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

Can you check for spark at the plugs?

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Did you also check the battery to be sure sufficient voltage is available for starting?

https://www.2carpros.com/articles/car-battery-load-test

Again, a video of how it sounds would be good so I can hear what you hear.

Roy