Runs sluggish when RPM's are below 3,000?

Restrictive exhaust usually doesnt clear up in the higher rpm range. Is that the correct sensor for the position it is in(upper or sensor 1)? Could be a bad sensor if nothing else but an exhaust manifold was done to the car. Ran better before, just had the CEL?What was the exact code that you got out of the comp?

Your car will be down in power when there is a high electrical load on the engine, or if the a/c is on.

You probably just have an older motor that can't keep up anymore. Do a compression test, the numbers are most likely a tad low across the board.

Remove the spark plugs and intake tubing. Ensure ALL the water has evaporated, then I would do a compression test to check if it did do any damage. You may need a new motor.

Hi axis,

7 out of 10 Honda engines that I have replaced or overhauled are due to failure of the oiling system, the other 3 are due to overheating.

This problem affects all makes and not Honda alone, Toyota have a sludging problem with a judgement against them. This is most likely aggravated by use of oil tretment.

Just had a Toyota Camry with 80 k on the meter with oil pressure light showing when engine is running. Used some engine flush but only managed to get the light off for a few seconds. Camshaft were running dry. Removed the oil sump and there was a layer of sludge at bottom. Oil strainer was 80 % clogged. Cleaned the strainer and retested, light immediately went off. Any longer and the engine would be history.

When oil treatments are used, they would form a layer on any surface that oil splashes onto. Moving areas would be scraped off but those areas that do not have any friction or movement would have sludge buildup as the supposedly protective layer is sticky. Over time this buildup would increase in thickness.

Regular oil change would prolong the process of buildup but if the oil change interval is far in between and with sporadic driving, it is is going to build up rather fast.

When engine is started regularly, problem might not occur but when it sits without moving for prolonged periods, the caking of sludges dries up and the next time the engine is started, the dried layer flakes off when oil splashes onto them.

This dried up sludge then becomes sticky semi-solids which would clog up the oil strainer as the strainer holes were already partially clogged by now.

Why can't you attain top speed without oil treatment? Only reason is if the engine condition is bad. For a new engine, with ot without, I don't see any difference, unless you are using low quality oils.

Castrol is a branded oil and I have been using their product for more than 20 years. I have never had any engine failure due to their product and I do not recommend oil treatments.

A good engine oil would help to remove the sludge from the engine and oil should be drained immediately after running the engine. This would prevent the sludge from sinking to the bottom of the oil pan.

Not many mechanics would tell you not to use oil treatments as it would reduce their source of revenue.

Hi Jaimecar7,

I believe the timing belt has not been correctly installed and you need to recheck/realign it.

Use a timing light to confirm if the ignition timing is way off the markt

Hi dro85,

Did you check the igntion timing?

If it is bogging down at high speed, check the fuel filter and pressure.

As to the whistling noise, if it is being produced while engine is being revved, check the belt tensions, overtensioned adjustment can produce such noises.

Try to locte the source with the aid of a hose acting as stethoscope.