52 replies to this topic

[jordanh420]

I just bought an 86 Civic Si and I'm having a major problem. It starts and idles fine, but when you give it gas it pops and sputters. If lightly press the gas it revs fine. When driving the car it has significant power loss. Tried everything, 02 sensor, swapped entire intakes with a known good one, main relay, lots of other things. any suggestions?

[msgall2003]

Could be a fuel delivery problem. Maybe a clogged fuel filter. My friend has a 93 hatch and had that problem, it turned out to be a clogged fuel filter. Just a suggestion.

[jordanh420]

Forgot to mention I did a filter as well. Keep the suggestions coming....

Edited by jordanh420, 10 August 2006 - 12:02 AM.

[RARECRX]

fuel pump?? distributor?? check for weak/intermittent spark and fuel pressure..

Edited by etmydst, 10 August 2006 - 12:03 AM.

[jordanh420]

fuel pump?? distributor?? check for weak/intermittent spark and fuel pressure..

<{POST_SNAPBACK}>

I've done ditributor. Don't know how to check for weak spark, and didnt check fuel pressure. Sorry im not more thorough on what ive done, im just really frustrated and fed up. Thanks

[RARECRX]

I say fuel pump, Is the ecu throwing any codes ?

[jordanh420]

I say fuel pump, Is the ecu throwing any codes ?

<{POST_SNAPBACK}>

I was throwing a code for the o2 sensor. Changed it and it went away. etmydst, do yu have aim so we can talk easier?

[Madkore]

Have you checked the cat to see if it is plugged?

[jordanh420]

Have you checked the cat to see if it is plugged?

<{POST_SNAPBACK}>

Yeah i disconnected the flange so i was basically running open header. No change.

[jjamiemmark]

dizzy advance working???

[jordanh420]

dizzy advance working???

<{POST_SNAPBACK}>

I'm assuming it is, the replacement was off of a running car. Vaccum lines are in good shape. How would i test it?

[phuber]

I had a problem that was difficult to diagnose (car would die after about 2 miles) and took it to the Honda dealer whose computer helped diagnose the problem (temperature sensor) but only after having replaced much more than I needed to (entire ignition system, fuel pump, fuel filter, etc.). They may be of help if you have covered the basics like the ignition and fuel delivery. As a result I have a bunch of relatively expensive spare parts like the ignitor for the same vehicle if you want to trade things out trying to find the problem. Just send me a pm if you think that would be of help to you.

[hawk86]

MAP sensor

[jordanh420]

I've replaced the MAP sensor. Thanks for all of the suggestions.

[jsgprod]

I've replaced the MAP sensor.  Thanks for all of the suggestions.

<{POST_SNAPBACK}>

Yeah, but did it cure/help the problem?

Jay