I will strongly suggest taking to a machine shop and having the crankshaft turned and the rods resized. Oct 07, 2010 No, the condition of the spark plugs will not provoke a knock. Jeff You are welcomed and thank you for the compliments. I wanted to do this because often times I end up posting the same thing to. So I am kinda a a loss of what to do next. I say try running some 92 or higher octane fuel in your car and see if you still hear the knocking. Old Motor could hit my top speed limiter 115mph with potential to go further this one barely can get up to 100mph.
Another is to start the car and check the oil on the dipstick. I the mean time maybe you could confirm for me I have looked on a website, a chilton's book and a haynes book and all say V-tec selenoid is pinout A4 while pressure switch is D6. Toyota says it affects engines up to a 2001 build, but I have heard of 2002 engines being affected as well. Check your owner's manual and see what octane is recommended for that engine. So I am looking in at replacing have to special order on saturday should be here monday or tuesday will inform you if problem is solved or persists.
When did you have the oil changed and how many miles does it have? Higher octane fuel does not provide more energy, more power, better mileage, more torque, burn cleaner, clean your engine, and is not better for the environment. When the engine is accelerated it might go away due to higher oil pressure. By running lower octane fuel in an engine that requires higher octane, your getting pre-ignition, the knocking sound you hear. That switch will be on the cylinder head. . I am thinking of replacing V-tec selenoid and pressure switch as I am not sure how to check if they are working.
If it's frothy or looks like a milkshake, this is another indication of a blown head gasket. K I will give that a shot and let you know. This is not a worry if it eases when the engine is hot. Add some fuel injection additive to your gas at fill up in case you are having clogged fuel injection problems. You could also look into purchasing a rebuilt engine.
Hope this helps you track down the problem. Both possibilities can be determined with a computer scan. Your ignition timing or timing belt could be a problem. If the engine is pinging when using the correct octane fuel, then it may be necessary to move to the next higher octane to prevent pinging, and damage to your engine, unless there is another problem. Jul 08, 2009 What is octane? Is that a trouble code cause I have a Check engine light. Hope this answers your question and feel free to post back with any other concerns or questions.
Jun 30, 2010 It may not be bad gas, but it could be the wrong octane rating for that engine. The only benefit to a high octane fuel is that it allows an engine to run at a higher temperature and with a higher compression ratio without pinging. First thing that comes to my mind is what grade of gas are you using, make sure you are using at least 87 octane. In that case it may become necessary to switch to 89 while towing. Octane cannot be seen, but it is of utmost importance when it comes to gasoline. I will give you some things to look for to solve this problem. Oct 21, 2014 all engines, its in one of 3 places.
Towards the windshield and passenger's side I think. If they recommend 87 then use 87. In other words, the higher the octane the less likely it is to ignite prematurely. Little confusing Hello again I have found the first trouble code sensor came unplugged fixed it. It could be a worn or damaged distributor part, a vacuum leak or faulty emission system. A heavier knock down lower indicates trouble with the engine bearings, and this will usually get louder as the engine becomes hot. Good luck on solving this knocking problem.
You will have to pull the engine and remove the crank shaft and connecting rods you have a bad rod bearing. The pressure switch is a common failure. As far as gas goes I would put a tank of high octane gas in about once a month. The milky appearance indicates that coolant is in your engine, caused by a bad head gasket. The higher the octane the more the fuel can be compressed without detonating before you want it to.
This will be no minor undertaking and will require time to repair. If the manufacture recommends 89 octane then use 89. But on my existing harness D6 pinout has a wire in it and not quite sure were it goes all diagrams tell me if its not vtec there is no wire there. This starves the bearings of oil and they wear quickly. Thank you so much for your help I love this site already.