car boggs when floored
05-09-2007, 01:31 PM
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car boggs when floored
Alright, I have an 89 si hatch w/ obdo b16 in it. When the pedal is put to the floor the car will jolt foward like heavy brakeing and decelerate which is really weird. I can only give the car about 90 percent throttle without it doing this. Could it be fuel cutting out? Ive got new cap and roter w/ plugs. I still am using the stock si fuel pump. One thing though, I need to replace my fuel injectors b/c they are starting to make alot of irregular noises that sound almost like valve tap. The reason I think that it isnt valve tap b/c it does it at random intervals, a friend told me that fuel injectors have little floats in them that open and close when a charge hits the injector. Anyways, could you guys give me any advice? Fuel cut causing my car to jolt forward at heavy gassing?
05-12-2007, 05:02 PM
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check your spark plug wires. i had the same bogging problem and it ended up being oil fowling up the plug wires. I had to get new wires, and fix the 4 seals in the valve cover.
05-23-2007, 05:48 PM
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It could be your fuel pump/injetors. It could also be your igniter, coil, plug wires. I had a simular problem with mine and it was everything with the distributor. The cap, rotor, coil, igniter, plugs, and wires.
As I replaced them one by one the car started driving better and better untill it was perfect. Wasn't fuel at all.
I would buy some spark plug wires and see if it does alittle better before you spend alot of money on fuel parts. I drove my car with a new cap and rotor on for awhile while it was doing this and I had to replace them again when I did the rest of the ignition.
If its an ignition problem you may want to repalce everything again if you drove it awhile after replacing the cap and rotor/ plugs while still having this problem.
Hope this helps.
As I replaced them one by one the car started driving better and better untill it was perfect. Wasn't fuel at all.
I would buy some spark plug wires and see if it does alittle better before you spend alot of money on fuel parts. I drove my car with a new cap and rotor on for awhile while it was doing this and I had to replace them again when I did the rest of the ignition.
If its an ignition problem you may want to repalce everything again if you drove it awhile after replacing the cap and rotor/ plugs while still having this problem.
Hope this helps.
05-25-2007, 04:22 PM
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Well, did all that to no avail. Here's an interesting note though. When the pedal is put to the floor in neutral the car's revs bounce between 1 and 2 grand. I'm throwing codes for knock sensor, IACV, and Map...My car isnt in limp mode though. Also, I replaced the Map with another one and the code is still there, any advice??
05-28-2007, 09:17 AM
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Alright, word, here's the thing, Ive replaced the fuel filter with a new one and am about to replace the factory si fuel pump w/ either a walbro or bbk 250lph. I'll keep you guy's posted, thanx for the input.