I have a 2000 5spd with 113xxx on it (the valves were just adjusted). I am aware that the noise the engine makes on a cold start is normal. However I started to notice a noise similar to the startup noise at highway speeds. I can hear it when I hold the gas steadily (cruising around 2-2.5k rpm) and it goes away/becomes less audible when I take my foot off the gas.
Based on search it appears it could be piston slap, engine knock, rod bearing, etc. I am sort of at a loss (the Honda dealer said it was normal because it is an old car after they charged me $400 not to fix it). When I first bought the car it had 5w 30 in it and did not make the noise at Highway Speeds (in fact I may have first noticed after putting 0 20w in it). I am thinking the next step is to try 5w 30 or 5w 20 and see if the noise goes away. If it does I am set otherwise I will keep searching.
It made the noise prior to the valve adjustment. Not sure if they increased the timing. I also put one tank of 93 through it and that did not make a difference (though it wouldn't hurt to try again because I also put fuel injector cleaner in that tank).
Last edited by BlueFalcon; 02-07-2012 at 09:38 PM.
Guys, "knock" as in detonation doesn't sound like a knock. It sounds like someone ringing the cylinder head with a very small hammer.
I'm guessing that you're probably reading into the noise too much. Buy a mechanic's stethascope from Harbor Freight for $4 and try and locate the noise.
Could also be CV joints?
__________________
Insight #1 - Silver '01 5MT @ 158,388 as of 7/11 - Best Tank: 84.5MPG over 807mi
Insight #2 - Silver '01 5MT @ 450,000 as of 1/12 - Best Tank: 86.0MPG over 800mi
Insight #3 - Silver '00 5MT, MIMA #163P, BCM Gauge, OBDIIC&C Gauge, BetterBattery @ 228,869 as of 1/12 - Best Tank: 78.4mpg over 687mi
I know the owners manual of my 03 MT Insight calls for "premium" fuel. I have always used the cheapest grade of fuel available and have never had any "knocking" issues. Im guessing the majority of Gen 1 owners use cheap fuel as well. Has anyone ever had negitive effects with this and had to use the higher grades of fuel? Or is there a reason Honda calls out for "premium" grades of fuel?
__________________
Insight #1 - Silver '01 5MT @ 158,388 as of 7/11 - Best Tank: 84.5MPG over 807mi
Insight #2 - Silver '01 5MT @ 450,000 as of 1/12 - Best Tank: 86.0MPG over 800mi
Insight #3 - Silver '00 5MT, MIMA #163P, BCM Gauge, OBDIIC&C Gauge, BetterBattery @ 228,869 as of 1/12 - Best Tank: 78.4mpg over 687mi
The timing is not serviceable - i.e. it cannot be manually set. It's completely computer controlled
__________________
** Silver 2001 MT #1541 ** MIMA #157P (not installed yet) ** BetterBattery ** OBD2C&C **
Best Tank: 90.2MPG over 918.7 miles 070MCM/030BCM, No MIMA. Details: My Commute MPGs HybridAutomotive.com (No, not gas electric - the other kind of Hybrid)
Bought/Sold/Dismantled six Insights so far, and every single one has been silver . I want a Citrus to keep for myself
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.
Engine noise (another one)
. I want a Citrus to keep for myself
