help with my 400

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Jun 12, 2006 | 05:14 PM

78FordF2504X4

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From: Evanston, WY

help with my 400

In my 400, when ever i get up around 2500-3500RPM it seems like the engine is flooding out. I have no loose vacum lines that i can see, my spark plugs are goldish brownish, and my timing is set to where i have a good smooth idle, i think its set at 8 degrees. Anyone know how to fix this?

Jun 12, 2006 | 07:51 PM

danlee

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From: Delaware

How are your spark plugs and wires, cap, rotor etc. Is it under load when this occurs? A poor ignition system will work well at light load and start to fail under heavy load.

Jun 12, 2006 | 08:23 PM

78FordF2504X4

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spark plugs are brand new and are a brownish color. the cap is brand new the rotor is in good shape. It happens when i get above 2500RPM. It sounds like it is flooding out.

Jun 12, 2006 | 08:28 PM

danlee

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From: Delaware

Have you checked your fuel pressure. A poorly regulated fuel pump can put out too much pressure at high RPM and blow open the needle valve.

Did you recently replace your fuel pump? Some replacement pumps will do this.

Jun 12, 2006 | 08:32 PM

78FordF2504X4

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No i havent replaced the fuel pump. I think it has the stock fuel pump. I dont know for sure because the engine has been rebuilt and i dont know everything that was done. I thought about buying a fuel pressure regulator a while back to hopefully solve this problem.

Jun 12, 2006 | 08:41 PM

danlee

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You should be able to buy an inexpensive fuel pressure gauge to check your fuel pressure.

Does it also do this when you rev it in neutral?

Jun 12, 2006 | 08:43 PM

78FordF2504X4

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No it doesnt do this in neutral. It usually does it in 2nd-4th gear. And it only does it on occasion. But it is common enough to make it a problem. What should the fuel pressure be at?