Question about Chevrolet 1500

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I just purchased a 1998 Chevy 1500 it doesn't start, you can spray ether into the throttle body and it starts then, but dies as soon as you quit spraying ether. Sounds to me like its the fuel pump but could it be something else?

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  • John Cervenka Jul 14, 2009

    First just want to say thanks for the reply. For a little more information on the truck. The truck is originally from Oklahoma but is now in the Dallas Fort Worth area. The truck has been sitting for the last 4 to 5 months in the couples driveway, with very little fuel in the tank, without being started. The driveway has a pretty good incline to it and the truck was pointed down hill, since the pump is the tank is it possible that the pump just lost prime and wasn't able to **** the fuel out of the tank? I now have the truck on level ground and have added a few more gallons of gas to the tank. I added a can of Gum Out and a few more gallons of gas to the tank Monday morning to try and remove any water that might have managed to get into the fuel supply. I am going to remove the fuel line in the morning to see just how far up the system that I have flow, if any. I will let you know what the outcome is and if I have anymore questions for you.

  • John Cervenka Jul 14, 2009

    Well I pulled the fuel line off and I have fuel up to the throttle body. How can I determine if the fuel injector module is bad? If it checks good is there anything that it could be. Like I stated before you can spray ether into the throttle body and the truck runs so it is getting fire.

  • John Cervenka Jul 14, 2009

    Well I pulled the fuel line off and I have fuel up to the throttle
    body. How can I determine if the fuel injector module is bad or if its the injectors? Can I take the injectors off and clean them? Like I stated before
    you can spray ether into the throttle body and the truck runs so it is
    getting fire.

  • John Cervenka Jul 21, 2009

    I replaced the fuel pressure regulator, thinking that it was where the fuel was where the blockage was. Now that I have done that the engine turned over several times but then it just locked up. Starter engages but it will now turn over all of the time. The battery is fully charged. Could it be that now there is too much fuel flow and filling the cylinders up with fuel not allowing the motor to turn over?

  • John Cervenka Jul 21, 2009

    I pulled the plugs and all of the plugs are fouled and full of gas, turned the motor over just once and about 10-12 ounces of gas came out of number 5 cylinder. Would this be the metering vavle? Indicating that I am in need of a new metering vavle and injectors?

  • John Cervenka Jul 22, 2009

    Thank you for your assistance, I replaced the injectors and metering valve and now it runs good. Again thanks for for your help.

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Hi There,

Your problem could be the metering block, which helps regulate the flow of fuel thereby making it efficient and avoid flooding. You can also check the jets which sprays the fuel if there are physical damages. Do not forget to check the power valve as shown in the link below as this is usually made up of rubber or thin metal that it easily breaks down in a Chavy. I am unsure if your model has the same mechanism. Please refer to the link below for reference. Once it is broken you will encounter regulating fuel to the combustion chamber.

Power Valve

Posted on Jul 21, 2009

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Hi,

Yes, as a matter of fact, it could be something else indeed. If I had the ability, like through chat, I would ask you additional questions regarding your vehicle. In lieu of that, I'll assume.

If your car has not had an injector flush, it may be a good place to look. Fuel injectors can become clogged over a period of time, and your car is 11 years old. In addition, the you may also have a fuel line clog. If I could ask you right now what region you live in, it could tell me a lot about the potential condition of your fuel line, filter, and pump.

I have touched on quite a few possibilities, although it is very hard to diagnose, much less repair an automobile via a web site. The absolute best we can do is give our very best, educated opinion. It is you, the person who will be doing the actual physical work, or being able to narrow down the problem with our help, that stops you form wasting your time, being overcharged at the mechanics, and hopefully get you back on the road quickly.

That being said, there is a specific order you should work from in order to find your solution quickly and efficiently. Most everyone would tell you to start with the least expensive and easiest to replace parts in the chain of your fuel system. Of course, if you don't have to spend any money adn can get close to where the problem is, that is best.

The fortunate thing is that it is the fuel system. Problems that are much harder are drive train problems adn electrical problems.

There is only a very finite number of things it can be. I do not know how mechanical you are, although a GOOD repair shop will diagnose your problem in the most efficient way, and apply the cost of the estimate to the repair. A great mechanic will diagnose yoru problem for free if he thinks he going to get the job.

So, areas to check:

fuel pump: you can check the flow of fuel being pumped by removing the hose that connects to the fuel injector module. If your car is not starting, but able to turn over, that is enough to prime the fuel pump and you should see flow. Also, if the pump is working, the fuel line from the tank to the pump is fine.

Fuel filter: easy to replace for the average motorist, and an inexpensive repair.

fuel injection module: not easy to diagnose without a repair technician. A flush does a world of good an any case, and even though it is a bit pricey, it makes a great deal of difference in the performance of your vehicle.

fuel line from pump to injectors: a compressed air hose applied to the end of the line will give you adequate results to find out if the line and hoses are clear. No air or weak ariflow at the other end, definitely a part of the problem.

So, in order of expense (low to high): fuel filter, fuel pump, fuel line (entire), injection flush.

I hope I was able to assist you to your satisfaction. If you have additional questions, I will be monitoring any replies, and will be able to reply to you within a day.

Thank you for using FixYa

Posted on Jul 14, 2009

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  • Kreesha Fletcher
    Kreesha Fletcher Jul 14, 2009

    OK, good. gumout works up to a point, but if you're not getting it through the entire system, it's not going to do much good. Gasoline can become a very sticky and clogging mess when left in the system, and seems more possibly now like your injectors. though I hope it is the fuel pump or another part that doesn't cost very much.

    p.s. - sorry about the typing errors in original post, it was after 1am here in Los Angeles, and I was getting sleepy. Keeping my fingers crossed.


  • Kreesha Fletcher
    Kreesha Fletcher Jul 14, 2009

    You have an electronically controlled fuel pump. Was the fuse checked? If not, you need to make sure you have covered all the bases. As I wrote before, there is no easy way to tell re: your injectors. You should sincerely find out how much an injector flush is in your area. In Los Angeles it is expensive, because they can get away with it - everything is expensive here. It may be more reasonable out there in Texas. I have to go to my "day job" right now, but I will check in when I get back.

    Thanks.


  • Kreesha Fletcher
    Kreesha Fletcher Jul 14, 2009

    You should not clean them with a solvent or gasoline. There is a specific injector cleaner to be used. Actually it is a process where the injectors are flushed. They have to be pressure injected.

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