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WannabeSI · 02-17-2004, 06:21 AM

I swapped a crvtec in my freinds 2000 si and for some reason cylinder 3 is missfireing. we changed the plugs, wires, cap, rotor, and the coil in the dist and Honda put on a new timing belt and they said it was "dropping a cylinder" and they didnt know why. they sugested a valve adjustment or possibly the ecu was having problems running the motor due to low compression. does their sugestions sound resonable? what would cause this?

driverunknown · 02-18-2004, 12:16 AM

All I want is a b16, and I hear about you rich guys ripping them out to put something else in...I wish I had more $$$

bump

WannabeSI · 02-21-2004, 11:47 PM

no one has ANY ideas???

hcivic.com · 02-21-2004, 11:51 PM

did you check thew injectors?
and have you tested the comperssion?
is the firring order correct?

5genracer · 02-21-2004, 11:52 PM

Have you tried moving the injector from cylinder #3 to another cylinder and seeing if the other one misfires? Probobly not the cause, but it is an idea.

WannabeSI · 02-22-2004, 01:39 AM

compression was checked on the block when i purchased it a month or two ago and it was fine. i havent checked the injectors they came with the 99 crv longblock that i bought. i will switch them around and see if the problem moves with it. also the firing order is correct.

Thanks

cws13 · 02-23-2004, 07:45 PM

Are you still using the Si ECU? Check the compression with the new head on it. and yes, adjust the valves. I had a Toyota with a new engine done by a reputable guy come by dropping two cyl. It was really screwy valve lash, it has to be extreme, but if the valve events are off, no compression. Pull the plugs and read them.

WannabeSI · 02-24-2004, 05:26 AM

yeah still using the si ecu on this swap. im gonna do a valve adjustment and check the injectors this week and if its not working i'll have the compression checked again.

Thanks
Rick

cws13 · 02-24-2004, 02:35 PM

It will run, but a stock Si ECU will not provide the right fuel for this setup. You need to look into.... Preferrably Hondata, or at least a V-AFC. If this is old hat to you, don't get insulted....but be sure to do the compression test hot and the valve adj. cold, not "my temp gauge says cold", but a thermometer in the valve train reading under 100 degrees. Otherwise your valve lash will be off later.

WannabeSI · 02-28-2004, 02:33 PM

ok, so i did a valve adjustment and it didnt change, then i swapped injectors and nothing. i checked compression and cylinder 2 is a bit low and three is really low 1 and 4 are fine. what would cause low comp? do you think the head gasket isnt sealing right? i torqued it down to spec maybe i need to get the head shaved it could be warped or something. that is what i am thinking. is there any other reasons for low compression? compression was checked on the crv longblock when i bought it and it was good but dropped when i put on the si head.

BlackFrog · 02-29-2004, 06:02 PM

the head could be warped or the head gasket could be blown. you should pull the head off and look (its gonna have to come off anyway) you might end up needing the block shaved and the head milled, but check it all for straightness before you do anything.

also, did honda put the right head gasket on? i dont know which one that engine is supposed to take, but im sure its not just a CRV or just a Si timing belt...

there are lots of ways you can loose compression, valves not closing all the way, head gasket, hole in a piston, warped head, cracked head etc... make sure you check all these things if you pull the head off, good luck with it.

-Chris

02-17-2004, 06:21 AM	#1
WannabeSI Senior Member Join Date: Nov 2002 Posts: 193 iTrader: 0 / 0% Rep Power: 16	I swapped a crvtec in my freinds 2000 si and for some reason cylinder 3 is missfireing. we changed the plugs, wires, cap, rotor, and the coil in the dist and Honda put on a new timing belt and they said it was "dropping a cylinder" and they didnt know why. they sugested a valve adjustment or possibly the ecu was having problems running the motor due to low compression. does their sugestions sound resonable? what would cause this? __________________ 97 Civic HX Black coupe 2000 B16a2 DC 4-1 ceramic header apexi ws catback AEM CAI H&R sport springs with kyb struts Full Si interior Si spoiler and tails Si gauge cluster 99-00 climate control 99-00 front end <a href=\'http://www.hondaswap.com/gallery/browse.php?album_id=266\' target=\'_blank\'>http://www.hondaswap.com/gallery/browse.ph...hp?album_id=266</a>

02-18-2004, 12:16 AM	#2
driverunknown Senior Member Join Date: Feb 2004 Age: 25 Posts: 1,482 iTrader: 0 / 0% Ride: Boosted B16 in ej1 Rep Power: 26	All I want is a b16, and I hear about you rich guys ripping them out to put something else in...I wish I had more $$$ bump __________________ The swap is completed. Dented oil pans will kill vtec. Now boosted! Vouches: Wanderinman

02-21-2004, 11:52 PM	#5
5genracer Senior Member Join Date: Dec 2002 Location: Frozen north - ND Posts: 162 iTrader: 0 / 0% Rep Power: 16	Have you tried moving the injector from cylinder #3 to another cylinder and seeing if the other one misfires? Probobly not the cause, but it is an idea. __________________ 02 Sebring Silver / Red S2000

02-22-2004, 01:39 AM	#6
WannabeSI Senior Member Join Date: Nov 2002 Posts: 193 iTrader: 0 / 0% Rep Power: 16	compression was checked on the block when i purchased it a month or two ago and it was fine. i havent checked the injectors they came with the 99 crv longblock that i bought. i will switch them around and see if the problem moves with it. also the firing order is correct. Thanks __________________ 97 Civic HX Black coupe 2000 B16a2 DC 4-1 ceramic header apexi ws catback AEM CAI H&R sport springs with kyb struts Full Si interior Si spoiler and tails Si gauge cluster 99-00 climate control 99-00 front end <a href=\'http://www.hondaswap.com/gallery/browse.php?album_id=266\' target=\'_blank\'>http://www.hondaswap.com/gallery/browse.ph...hp?album_id=266</a>

02-23-2004, 07:45 PM	#7
cws13 Senior Member Join Date: Nov 2002 Location: Athens,GA Posts: 484 iTrader: 0 / 0% Rep Power: 19	Are you still using the Si ECU? Check the compression with the new head on it. and yes, adjust the valves. I had a Toyota with a new engine done by a reputable guy come by dropping two cyl. It was really screwy valve lash, it has to be extreme, but if the valve events are off, no compression. Pull the plugs and read them. __________________ 1320 Motorsports Athens,GA <a href=\'http://www.1320motorsports.com\' target=\'_blank\'>1320 MOTORSPORTS</a>


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02-21-2004, 11:47 PM	#3
WannabeSI Senior Member Join Date: Nov 2002 Posts: 193 iTrader: 0 / 0% Rep Power: 16	no one has ANY ideas??? __________________ 97 Civic HX Black coupe 2000 B16a2 DC 4-1 ceramic header apexi ws catback AEM CAI H&R sport springs with kyb struts Full Si interior Si spoiler and tails Si gauge cluster 99-00 climate control 99-00 front end <a href=\'http://www.hondaswap.com/gallery/browse.php?album_id=266\' target=\'_blank\'>http://www.hondaswap.com/gallery/browse.ph...hp?album_id=266</a>

02-21-2004, 11:51 PM	#4
hcivic.com Senior Member Join Date: Jan 2003 Location: Calgary Alberta canada Posts: 4,577 iTrader: 0 / 0% Rep Power: 59	did you check thew injectors? and have you tested the comperssion? is the firring order correct?

02-24-2004, 05:26 AM	#8
WannabeSI Senior Member Join Date: Nov 2002 Posts: 193 iTrader: 0 / 0% Rep Power: 16	yeah still using the si ecu on this swap. im gonna do a valve adjustment and check the injectors this week and if its not working i'll have the compression checked again. Thanks Rick __________________ 97 Civic HX Black coupe 2000 B16a2 DC 4-1 ceramic header apexi ws catback AEM CAI H&R sport springs with kyb struts Full Si interior Si spoiler and tails Si gauge cluster 99-00 climate control 99-00 front end <a href=\'http://www.hondaswap.com/gallery/browse.php?album_id=266\' target=\'_blank\'>http://www.hondaswap.com/gallery/browse.ph...hp?album_id=266</a>

02-24-2004, 02:35 PM	#9
cws13 Senior Member Join Date: Nov 2002 Location: Athens,GA Posts: 484 iTrader: 0 / 0% Rep Power: 19	It will run, but a stock Si ECU will not provide the right fuel for this setup. You need to look into.... Preferrably Hondata, or at least a V-AFC. If this is old hat to you, don't get insulted....but be sure to do the compression test hot and the valve adj. cold, not "my temp gauge says cold", but a thermometer in the valve train reading under 100 degrees. Otherwise your valve lash will be off later. __________________ 1320 Motorsports Athens,GA <a href=\'http://www.1320motorsports.com\' target=\'_blank\'>1320 MOTORSPORTS</a>

02-28-2004, 02:33 PM	#10
WannabeSI Senior Member Join Date: Nov 2002 Posts: 193 iTrader: 0 / 0% Rep Power: 16	ok, so i did a valve adjustment and it didnt change, then i swapped injectors and nothing. i checked compression and cylinder 2 is a bit low and three is really low 1 and 4 are fine. what would cause low comp? do you think the head gasket isnt sealing right? i torqued it down to spec maybe i need to get the head shaved it could be warped or something. that is what i am thinking. is there any other reasons for low compression? compression was checked on the crv longblock when i bought it and it was good but dropped when i put on the si head. __________________ 97 Civic HX Black coupe 2000 B16a2 DC 4-1 ceramic header apexi ws catback AEM CAI H&R sport springs with kyb struts Full Si interior Si spoiler and tails Si gauge cluster 99-00 climate control 99-00 front end <a href=\'http://www.hondaswap.com/gallery/browse.php?album_id=266\' target=\'_blank\'>http://www.hondaswap.com/gallery/browse.ph...hp?album_id=266</a>

02-29-2004, 06:02 PM	#11
BlackFrog Neighborhood Lush Join Date: Sep 2003 Location: West Side, CT Age: 27 Posts: 674 iTrader: 0 / 0% Rep Power: 23	the head could be warped or the head gasket could be blown. you should pull the head off and look (its gonna have to come off anyway) you might end up needing the block shaved and the head milled, but check it all for straightness before you do anything. also, did honda put the right head gasket on? i dont know which one that engine is supposed to take, but im sure its not just a CRV or just a Si timing belt... there are lots of ways you can loose compression, valves not closing all the way, head gasket, hole in a piston, warped head, cracked head etc... make sure you check all these things if you pull the head off, good luck with it. -Chris __________________ EG2 Drink Beer.

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2000 si with crvtec dropping 3rd cylinder