The battery is fine, I checked the spark plugs, and my next step is to put a fuel injector and carb cleanser in. I think it may be the fuel pump, or injector, maybe the filter? does this seem like something i should attempt before I take it in to a mechanic that will charge me an arm and a leg?
- 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.
Make sure battery has a full charge. Have a helper crank it while you check for spark at the plugs. If spark everywhere, use a gage and check proper fuel pressure and fuel injector pulse. How long since a tune-up? Any applicable trouble codes?
Chevy doesn't have a fuel cut-off switch. As far as ford--chevy--Chrysler, ford is the only one I know of that has a fuel cut-off switch.
Check fuel line for pressure - there should be something like a bike tire valve on fuel line - press the inner part of it and see if gas spurts out hard. If so you have pressure , a working fuel pump, and gas is reaching the injectors.
Sounds like you have either a shorted fuel pump driver ground or a sticking fuel injector or injectors. Remove the injector electrical plugs and see if it still flood if it does then then one or more injectors are defective, if not then the engine wiring harness is grounded to one or more injectors or the PCM (powertrain control module) is defective. Remove the spark plugs to ID which cylinder is defective, disable the ignition system when you do this or the gas squirting out the spark plug hole can ignite (been there)
Check the 10amp fuse 21 in the fuse box. If that is good, try to find the manifold vacuum solenoid valve. It s near the air filter as shown in the figure below. It will have two wires in the connector and two hoses attached. Test the valve by applying battery power to see if it opens. If not, replace the valve. If it opens, check the connector and wiring. The above steps are intended to resolve the 1105 code.
I'm not sure this code is making the truck hard to start. With good spark and fuel pressure, the next thing I would check is for AC voltage at the Injectors. Put an AC voltmeter on one of the injector connectors and watch the voltage while someone cranks the engine. Your meter should read at least 5 volts AC.
spark plugs are deep in the head yet you should get all the the old fuel out first, stale fuel wont ignite and will also clogg fuel filter. you need a mix of atleast 70% new fuel even then its not good for the injecters. If its a manual gearbox a tow start is a quick fix although no go for auto's. cant be much wrong if car was fine when parked, plugs-fuel-filter and possibly fuel pump for sure. If that doesnt fix take plug out put in lead and crank engine to be sure you have spark even just put any plug you know works in lead leaving your plugs in engine just to check for spark y turning over engine looking for spark on plug good spark will be blue but any spark is good.
When the problem is ongoing, check the basics. Make sure battery has full charge. When the problem is ongoing if it cranks good but won't start, Have a helper crank it while you check for spark at the plugs. If spark everywhere, use a gage and check proper fuel pressure. Also, check fuel injector pulse.
Trying to find what is missing, fuel--spark--whatever. I can only help with testing, you have to do the testing.
If a crank sensor goes bad the vehicle will typically not start at all.
If you have spark to all the cylinders than the next step is to either check compression or check the injectors. Usually the injectors will stick when this happens they will ohm out fine but will not spray fuel. To check them you will need either a high end scan tool or and injector tester and an fuel pressure gauge. The tester is connected to the injectors one at a time using the bulk connector near the alternator. The injector is then triggered by the tester as you watch for a drop in fuel pressure. Whichever injector does not drop fuel pressure when triggered is the bad injector.
is the fuel spraying into the cylinders? pull a plug and see if they have fuel on them.....If not you have a problem at the injectors if there is pressure on the rails. If fuel is present you aren't firing strong enough to ignite the fuel. pull a plug and put the wire on it and touch it to a ground and check to see if it is a good blue spark or a weak white or yellow spark...If no spark check for dead plugs or distributor module,
Hi, if your motor turns over ok & appears to be getting fuel, I'd probably check for spark by putting a spare plug in one of the leads & turning the engine over to see if it sparks, if it doesn't spark maybe it's your crank angle sensor/coil etc.
Your next step in diagnosis your problem should be to check for spark, you'll have to use a spark tester for this, simply removing a spark plug and looking at it WILL NOT WORK, a spark tester looks similar to a spark plug but it has about a 3/4" gap.
Another thing you should check is the voltage of the battery with a multimeter while cranking the engine, if it drops below 9.6v your computer will turn off and your injectors wont fire and neither will your plugs. If you don't have a multimeter just try jump starting the vehicle.