Will not go when you give it gas

TOMMY FLANAGAN

MEMBER
2000 MITSUBISHI MIRAGE
27,868,310 MILES

I have put a new camshaft position sensor on it, new timing belt, new distributor, plugs and plug wires. Now when you give it gas it is like it does not take the gas or something. You can give it a little gas it will not do it but when you push the gas on down it does not want to take it or something. It will jump and go on. Need help thanks.

3 Replies

HARRY P

MECHANIC
2,293 POSTS

To me, it sounds like it is starving for fuel. Basically, it is getting enough fuel pressure to idle, but not do much more than that. You can rent a fuel pressure tester from AutoZone or Advance Auto for free with a deposit. There is a test port on the end of the fuel rail.

Here is a general how-to guide: https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

With the vacuum line on the pressure regulator connected, you should get 38psi, and 47-50 psi with it disconnected.

You can also try looking for large vacuum leaks. Here is a how-to guide on that: https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Check these out and let us know what you find. We will go from there.

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Thursday, February 15th, 2018 AT 7:16 PM

TOMMY FLANAGAN

MEMBER
8 POSTS

Thanks I get it check I look at my pugs and on one of them on number 2 pluga the end got burnt off the end of the plug and the other three look like they're this real Rusty red looking it will go as long as I don't give it a lot of gas when I pussy the gas on down it will jump and don't won't to take the gas I have put a new distributor new plugs new plug wires new timing belt new fuel filter new water pump I just don't no why when you push the gas on down it don't won't to take it I was told it might have jump time and I was told that the fuel pump might not be pumping enough gas or it might be the injectors fuel injectors one of them might be not working so I don't no need help thanks

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Monday, March 5th, 2018 AT 7:36 AM

HARRY P

MECHANIC
2,293 POSTS

That's why I suggest the fuel pressure test. That'll tell you if you're getting the right amount of fuel or not. You don't have to buy anything to do it with, just borrow with a deposit. But that deposit is fully refunded when you return the borrowed fuel pressure gauge. So go ahead and do that and see what you get.

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Monday, March 5th, 2018 AT 9:30 AM