About 20-30 trq and whp loss on bone stock jdm itr in 1900lbs eg cx hatch? first 2 weeks i had car been running so good i ran 8.5 on 1/8 mile on poor 2.0 60ft. i told myself not going back to lsv or b20v for a long time. buddy that sold me car said im just getting used to the power" and that he did a new timing belt and water pump and spark plugs. so ill i did was a change oil,(moble1 10w-30 full synthec) since then the power and drive-ability loss no smoke or sputters no sign on motor externally. what do you guys think about the hp and trq loss?

 

t-belt a tooth off? check ignition timing, too.

 

the dissy has been marked, looks like it didnt move butt ill hit it with the timming gun and check tdc. thanks..

 

pull the valve cover and check the timming belt ,

timming gun depending on how good it is may not show a big difference , espically if its the exaust cam thats skipped (not connected to the distibutor )

 

do a compression test and check the timing at the crank/cams not distributor.

 

a stupid question but how do you know you lost 20-30

 

big loss of power through entire rpm range. red lines a little slower with no pull just noise. believe me last week when we would get on it, we would almost have to hold on to something.. ill do compression test today..

 

Hook the VTEC selonid back up.

 

vtec works fine just dont pull hard enough like last week

 

did you check the timing belt yet?

 

looks ok tdc ok .what else could it be?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jj’s type r &raquo;</TD></TR><TR><TD CLASS="quote">Aso ill i did was a change oil,(moble1 10w-30 full synthec) since then the power and drive-ability loss no smoke or sputters no sign on motor externally. what do you guys think about the hp and trq loss?
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get rid of that moble1 10w-30 full synthec and put your old oil back in. that ought to bring back your 20-30 hp.


Modified by ( o )( o ) at 4:48 PM 5/22/2007

 

start with the dumbest ******* thing you can think of and work your way up to the most complicated.

1. is your cat clogged?


theres so much **** it could be.

 

anything wrong with the engine you would see in the idle

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xDicktonesx &raquo;</TD></TR><TR><TD CLASS="quote">start with the dumbest ******* thing you can think of and work your way up to the most complicated.

1. is your cat clogged?


theres so much **** it could be.</TD></TR></TABLE>

that sounds like a good possibility

 

Hows the results from the compression test?

 

compression test results. cylinders 1-2-3 are at 180 and cylinder 4 is at 200 psi.
when motor was running strong last week im pretty sure they were all over 225psi.

 

manual says that 184 is a good compression,

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jj’s type r &raquo;</TD></TR><TR><TD CLASS="quote">compression test results. cylinders 1-2-3 are at 180 and cylinder 4 is at 200 psi.
when motor was running strong last week im pretty sure they were all over 225psi.
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might be your head gasket. Any coolant in your oil or vise versa?

 

lol...thats a huge problem..so when you were getting on it..did you slightly bend any valves?? possible crack something i thinka head removel is in order... leaky HG, bent valves..possible something else messed up??

 

did you do a compression check when you first got it. did you check to make sure you did every thing right. could be something as simple as bad gas,ive had it happen.whens the last time its had a good tune up ,have you look at the spark plugs to see if its lean or rich. lots of possibilitys. take it to the track and see if you run the same times