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Hey guys,
Recently I’m having an issue. When cruising around 1800rpm and I depress the accelerator just a little bit, for example, when going uphill trying to maintain speed the engine starts to shudder until around 2500rpm and progresively stops and If I depress the pedal further enough so that the gearbox reduces to 3rd then it stops shuddering immediately.
The spark plugs are new and the correct ones according to the Honda specs and the distributor cap, ignition module and igniter are also new so I don’t suspect an ignition problem.
I read somewhere that it could be that the carbon deposits from exhaust gases coming from the EGR valve might be obstructing the passage ways inside the manifold but the car only has 47.000 miles…
Any ideas?
Thank you
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Honda Ignition systems are a bit unusual, in that a lot of aftermarket ignition components break down under the hefty Honda sparks.
It could also be due to a fuel problem, in which case you should follow Eric’s fine video on engine stumbling problems.
Can be quite a few things, EGR, exhaust components in general, fuel, intake. I’d certainly take a look at ETGC’s hesitation issue series (aka solving engine performance problems):
Part 1:Part 2:
, and hit a few others in a similar vein to try to narrow down where to look.
Pull any/all codes FIRST. Even on ODB1 (as it’s a 93′), should hopefully have something..
If you’ve recently had the timing belt replaced then check the balance shaft timing. What you describe are the classic symptoms of that belt being out of time. You will have to remove the lower timing cover to do that unfortunately. It’s not bad once you get the crank pulley off. I recommend the special tool to do that with.
http://www.jbtoolsales.com/performance-tool-w83168-acura-crank-pulley-tool/#oid=1002_1
The EGR passages are a possibility as well as an ignition problem, but the RPM range you describe is dead on what happens when the balance shafts are out of time on that engine.
Keep us posted on what you find.
Hey Eric glad you came by to help as well as all you guys! Well…actually the timing belt was replaced one year ago more or less but these symptoms only appeared a few months ago. One thing I forgot to mention was that I checked the timing and it was 7° off and after adjustment I didn’t feel any improvements.
Do the balance shafts need to be synched when the timing belt is changed?You should not adjust the ignition timing unless you follow the factory procedure. It probably appeared off because you did not follow the procedure for checking it. Now that you’ve altered it, it may be off now. I would first recommend you check the timing of the balance belt as I suggested in my last post. There are actually 2 belts on that engine. One for the cam and crank, and one for the balance shafts and oil pump. Both need to be replaced and timed correctly when replacing the timing belt on that engine.
Once you’ve got that timing correct, follow the factory procedure to set the ignition timing properly and then recheck for your symptoms.
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