Choppy, hesitant acceleration in 1995 Honda Odyssey?
This problem has been going on for about a month now. Frequently, when I accelerate from a complete stop or speed up after I get going the motor does accelerate smoothly. It will be sort of a choppy acceleration. Once I reach the speed I want the car runs and sounds very smooth without any choppiness. What could be wrong? Injectors? Spark Plugs? Ignition coil or wires?
Mileage? The issue sounds like misfires under load which could just be due to worn out plugs /wires, cap/rotor or dirty injectors that have poor spray patterns. Any check engine light? Could be due to various issues but given the age of the vehicle and if overdue, I'd start by doing a tuneup to get a baseline for any future testing if still needed… Replace plugs, wires, cap, rotor, fuel/air filters, PCV, etc. And test drive after that. Run some Seafoam or Techron in the fuel tank per label directions for a couple tanks to clean injectors… They may still require better cleaning or testing. Try using a Top Tier brand of fuel if you have poor quality gas in the area… Top Tier brands contain more detergents to keep fuel system clean and reduce harmful deposits which can affect engine operation. Check for any vacuum leaks which might be causing a misfire or lean condition… Loose, cracked, split vacuum hoses, etc… With engine idling and warmed up, spray some carb cleaner around vacuum hoses, connections or TB or intake manifold sealing areas, if idle rpm's alter or rise, that indicates a vacuum leak… Repair as needed.new hose or gaskets, etc. Would also be a good idea to do a compression test of the cylinders when changing plugs to see if any are out of spec… Could be a related issue.
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