Misfire - stumble - Honda-Acura.net

MonteC · 09-17-09, 09:05 PM

92 Acura Integra 5spd. Car has 245k, im hardly ever on here because the car runs great most of the time.

Recently within the last month a misfire or stumble has developed. At first it only occurred at highway speed in 5th gear while cruising. It would just hiccup a little and then be fine.

Now the problem is becoming more prevalent, anything about 3k will stumble but the car is still drivable, i can run 80mph down the interstate it will just jerk every few seconds. If i go above 3/4 throttle the problem will clear up.

At idle i can hear it in the exhaust, and barely feel it in the car, i can rev the engine up to 3-4k and hold it, and it stumbles, but it will rev up without much effort.

I do tune ups every 30k, about once a year, im about 15k shy of a tune up. Been though a few tanks of gas at different stations. I havent had much time to look at the car, im going to try to look at it Saturday. But wanted to gather opinions before i tear into it.

I need to replace the fuel filter, do a fuel pressure check, check the distributor. Check the injectors. Btw NO CELL LIGHT. The light works properly but the car is not throwing any codes.

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AcuraLsSE · 09-19-09, 07:14 AM

I would check: spark plugs, wires, distributor, fuel filter, and injectors. Start with the easier stuff first. I don't know if the OBD 1 reads misfires but I know that my OBD 2 will throw a code when it had a misfire.

Lynxs1981 · 09-19-09, 10:24 AM

They're bad about randomly eating plug wires.

cruzalekz · 09-19-09, 04:47 PM

check rotor in the distributor.
also possible that your ignition coil is about to go

MonteC · 09-21-09, 05:57 AM

No time on saturday. Didnt feel like driving to the shop to dick with it on sunday. Might have a few hours today. But it is getting worse.

JoePoonani · 09-21-09, 05:08 PM

Have you replaced the dizzy cap and rotor? Also the coil may be weak.

MonteC · 09-21-09, 07:16 PM

hold down bolt for the rotor backed out. Luckily it didnt move too far or the car would have quit running. It moved just enough to jump time a smidge. Replaced the torn up cap and rotor and the car is back to normal.

Funny thing is this is the second time the bolt has backed out. Last time my wife got stuck on the side of the road. this time I found a new bolt and used a dap of locktite.

300k here i come!

Lynxs1981 · 09-22-09, 09:39 AM

Nice, easy fix. Locktite is always a good idea on those bolts, just don't over do it. You might want to get it back out later.

joe_kewl81 · 11-01-09, 06:18 PM

check the air intake for cracks, and any obvious old vac lines.

MonteC · 11-02-09, 01:10 PM

Quote:

Originally Posted by joe_kewl81

check the air intake for cracks, and any obvious old vac lines.

Cars been running fine for a few months now. thanks.

09-19-09, 07:14 AM	#2
AcuraLsSE ASE Certified Join Date: Nov 2005 Location: The 503 Posts: 783	I would check: spark plugs, wires, distributor, fuel filter, and injectors. Start with the easier stuff first. I don't know if the OBD 1 reads misfires but I know that my OBD 2 will throw a code when it had a misfire. __________________ 1996 Integra Special Edition 5 speed Fidanza short shifter, Stage one Exedy clutch w/10lb Exedy flywheel 350f 400r Ground Control coilovers with koni yellow shocks Skunk2 camber kits front and back type r sway bar w/ASR sub frame brace Oversized JDM type r pistons

09-19-09, 10:24 AM	#3
Lynxs1981 Senior Member Join Date: Aug 2006 Location: MO Posts: 292	They're bad about randomly eating plug wires. __________________ My fully tuned 99 GS-R, 250+ HP Short clip of it here

09-21-09, 05:57 AM	#5
MonteC Transmission Guy Join Date: Mar 2007 Location: Summerville, SC Posts: 30	No time on saturday. Didnt feel like driving to the shop to dick with it on sunday. Might have a few hours today. But it is getting worse. __________________ Daily: '92 Acura Integra /248k on stock drive train/ Current Project: '84 Camaro Z28 Ls1/T56 Swap Distant Project: '86 Monte Carlo SS LSX Swap

09-21-09, 05:08 PM	#6
JoePoonani Lexus Tech y0!! Join Date: Jan 2004 Location: CT Posts: 8,298	Have you replaced the dizzy cap and rotor? Also the coil may be weak. __________________ 09 Civic EX - current DD 03 VW Jetta Wolfsburg Edition 1.8T APR tuned - totalled 94 Integra LS - sold 94 Civic Ferio - stolen/raped

09-21-09, 07:16 PM	#7
MonteC Transmission Guy Join Date: Mar 2007 Location: Summerville, SC Posts: 30	hold down bolt for the rotor backed out. Luckily it didnt move too far or the car would have quit running. It moved just enough to jump time a smidge. Replaced the torn up cap and rotor and the car is back to normal. Funny thing is this is the second time the bolt has backed out. Last time my wife got stuck on the side of the road. this time I found a new bolt and used a dap of locktite. 300k here i come! __________________ Daily: '92 Acura Integra /248k on stock drive train/ Current Project: '84 Camaro Z28 Ls1/T56 Swap Distant Project: '86 Monte Carlo SS LSX Swap

09-19-09, 04:47 PM	#4
cruzalekz Registered User Join Date: Aug 2005 Posts: 419	check rotor in the distributor. also possible that your ignition coil is about to go

09-22-09, 09:39 AM	#8
Lynxs1981 Senior Member Join Date: Aug 2006 Location: MO Posts: 292	Nice, easy fix. Locktite is always a good idea on those bolts, just don't over do it. You might want to get it back out later. __________________ My fully tuned 99 GS-R, 250+ HP Short clip of it here

11-01-09, 06:18 PM	#9
joe_kewl81 Junior Member Join Date: Jan 2009 Location: charlottesville Posts: 25	check the air intake for cracks, and any obvious old vac lines.

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