My truck is hard starting to get it started I basicly have to hold the gas pedal all the way to the floor. When it starts it runs really rough and is ready to stall. It seems to have two dead cylinders. When I hold the gas pedal down about half way the truck smoothens out like its running on all cylinders and seems quiet like it used too at high rev and at low rev it just sounds rough and stalls out at idol and I have alot of carbon coming out from the exhaust. I checked the distributer and rotor and it checks fine, I put in new spark plugs in the old ones seemed carboned up and thats not the problem. I put in a new ignition control modual. I checked the coil out with a mutimeter and it checked out fine. Im getting fuel to the carb i see it splatter up. Any suggestions to what this may be. Im out of ideas. Im putting in new spark plug harness but other than that Im out of ideas. Any input would be appreciated thanx.
This could be a few things. The first thing i would check is the firing order as 2 crossed leads will cause this . If this checks out ok try a compression test. A blown head gasket between 2 cylinders will also cause this. Hope ive helped
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US. click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need. Goodluck!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
NO. the vacuum is used to make the brake pedal easy to push, power brakes. the pedal would be hard without vacuum, that is why the pedal gets hard with the key off and engine not running. the problem you are having is more of a hydraulic problem. Have the brakes checked asap. the brake system may have a leak causing the pedal to go low. check the fluid level and if it is low or empty then there is a problem, could be a rotted brake line leaking or a wheel cylinder leaking.
Does it start better after sitting overnight? Is it missing at all? Check engine light? Hard starting could be fuel pump, also lack of power could be lack of fuel. If it starts better after sitting overnight, could be block catalytic converter. That would also explain lack of power. If you have to hold gas pedal half way down trying to get speed would explain why it is not going into overdrive. Hope this gives you some direction.
Holding the pedal to floor should not do anything because the car is fuel injected... You may check your fuel filter.. it sounds like its taking along time for fuel to start engine... The fuel filter is located on the cross member just forward of the fuel tank....
It is fairly hard to diagnose from this,but I am assuming that it ran ok the last time you ran it.It may be flooded.hold the gas pedal to the floor and crank the engine.Do not be tempted to lift your foot or pump the pedal.It may have to crank for 20 seconds or more,but it should begin to fire up, first 1 cylinder,then 2 etc,again do not lift your foot until it is firing on all cylinders and revs up cleanly ,then lift but keep it revving a little until all gas is cleared and the plugs arent fouled. hope this helps or get back with some more information
If/when you do get it started, do you have to hold the petal to the floor or give it a lot of gas to 'clear' it up again? Does it smoke when you first start it up? If so, you might have a leaking injector (s), the o-rings allow pressure to push gas into cylinders when you shut down, flooding the cylinder-will cause hard starting. If this is not the case, consider a heat-sink kind of situation with the crank sensor-it gets hot with normal driving, and gets even hotter with heat-soak when shut down and changes electrical properties (specifically resistance) until it cools down again. change the crank sensor.
Looks like some engine oil goes into the cylinder and contaminate your spark plug, thus making your plugs miss.
Look where that oil damp spark plug located at cylinder number, in that cylinder the valve seal is to be replace immediately. Valve seal is located on top of the engine that seals the intake/exhaust valve and valve guide, from oil going in the cylinder.
You could ask your mechanic to do the job, it is a bit hard to replace it. the parts needed coat just under $5.
Hope that helps you out!
Thanks for using Fixya!