Bogging at 70 mph+
 

So recently my prelude has been bogging, but only when I go over 70 mph. It's like the fuel cuts out, and the car stops accelerating and then it picks up again. Anybody have any idea what it would be? I just replaced the cap and rotor, spark plugs, and wires. Didn't make a difference besides idle.

My guess would be Injectors, or fuel filter clogged.

Haven't touched the fuel filter yet. I do have a new one, just not comfortable putting it in.

Have u put gas recently? ? Cus my ek did the same thing right after I filled up ...drive, then bogged up, drive , and bogged up...first thing I tought got a bad batch of gas. ..throw in a addictive see if helps worked for me.

It's cake man. Like 10 min tops. Just undo the hose and bolts that hold it to the firewall and install yhe old one. I would get some Lucas Injector cleaner first though. See if that helps.

Hmm I guess I never thought of that. It's almost out of gas, I'll fill it up and see what happens.

I've never had that easy of a time and don't know anyone who's described it as "cake". More like pain in the ass. OP, get yourself a set of "crows feet" before tackling this.

Also, may want to do a throttle body cleaning and clean the sensors on it as well.

Not a cake job at all, they are not like civics and integras. But yeah I would do the flyer since you have it already, and run something to clean your injectors.

Helped my buddy fix an ek that was doing this once. The timing was off by one tooth.

If the cat was going out, I would have a power loss. Exhaust is less than a year old, can't imagine it's already clogged. I'm going to change the fuel filter and run some seafoam through it after work.

Nvm. Was thinking of my integra..... Lol my bad!

I wonder if that's what causes my slight hiccup around 4k, and then again right before VTEC.

Replaced fuel filter and ran seafoam through it, still bogs at 70+....

Fuel pump.

I believe I have the same issue, kind of, on my Del Sol.

If it was the fuel pump, I would think it would have start-up problems as well. I am being told it could be the primary o2 sensor as well.

O2 will throw a code, fuel pump won't.

Rarely ever seen a bad up stream O2. It's generally the rear or cat or both.

As for no issue on start up, it's not working as hard as when at 70 plus. That's why you only see it at higher speeds.

I'm betting it's the cat. Just want to make sure before I actually throw parts at it.

Ordered secondary o2 sensor. Hope it fixes the problem.

Keep us updated. I'm curious.

I'm just as curious as you are. Lol

Is it auto? If so it could be your Trans. Doubt the O2 would cause that.

did you ever look into this?

Car is a manual. I highly doubt the timing is off by a tooth.

Thought I'd mention that once I'm over 70 mph it runs like normal.

Ouch thats not good. New distributor time?

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Unfortunately, yes. I'm hoping it solves the bogging but not going to hope.

Got a new distributor and installed it last night. Only time will tell if it fixed the problem