Car runs bad after cams

Reply Subscribe

Thread Tools

Search this Thread

Oct 29, 2007 | 08:59 AM

#16

whitersevo

Evolved Member

iTrader: (15)

Joined: May 2006

Posts: 1,082

Likes: 0

From: Arizona, FTW

well if it is so easy to install for yourself.. just reinstall them? it is only a couple hours to redo... take it apart, reinstall, and get back with us....

Oct 29, 2007 | 09:04 AM

#17

E VOL IX

Thread Starter

Evolved Member

iTrader: (8)

Joined: Jan 2006

Posts: 1,194

Likes: 0

From: Fuquay-Varina, NC

Well its kinda hard to get to it when i work in a shop all day for 12 hours anyways... im just tryin to get any ideas before i put the stockers back in.

Oct 29, 2007 | 09:07 AM

#18

whitersevo

Evolved Member

iTrader: (15)

Joined: May 2006

Posts: 1,082

Likes: 0

From: Arizona, FTW

^^^^ I hear ya, maybe just take off the cam gears, and redo your timing>....

Oct 29, 2007 | 09:09 AM

#19

matt55

Evolved Member

iTrader: (12)

Joined: May 2003

Posts: 1,734

Likes: 1

From: NC

Quote:

Originally Posted by E VOL IX

the car now sounds like it is a subaru and sputters like hell taking off..

Maybe a long shoot but check cylinder pressure and leak down

The only time i ever used the term "sounds like a Subi" is when a ex valve wasnt closing due to a broken valve spring .

Oct 29, 2007 | 09:46 AM

#20

E VOL IX

Thread Starter

Evolved Member

iTrader: (8)

Joined: Jan 2006

Posts: 1,194

Likes: 0

From: Fuquay-Varina, NC

I thought the same thing... but we took off the valve cover and everything looked fine turning the crank.

Oct 29, 2007 | 10:17 AM

#21

matt55

Evolved Member

iTrader: (12)

Joined: May 2003

Posts: 1,734

Likes: 1

From: NC

Quote:

Originally Posted by E VOL IX

I thought the same thing... but we took off the valve cover and everything looked fine turning the crank.

it only takes 15 mins...... and its hard to SEE if the valve is closing/sealing all the way

dumd question/idea #2 did yall bleed the lifters ?

Oct 29, 2007 | 10:20 AM

#22

E VOL IX

Thread Starter

Evolved Member

iTrader: (8)

Joined: Jan 2006

Posts: 1,194

Likes: 0

From: Fuquay-Varina, NC

of course we bled them

Oct 29, 2007 | 10:25 AM

#23

James Reese

Newbie

iTrader: (3)

Joined: Sep 2007

Posts: 85

Likes: 0

From: San Diego

I would take it apart and start over. I would assume you guys put them in incorrectly. I would highly doubt you got a bad set of cams.

Oct 29, 2007 | 10:45 AM

#24

E VOL IX

Thread Starter

Evolved Member

iTrader: (8)

Joined: Jan 2006

Posts: 1,194

Likes: 0

From: Fuquay-Varina, NC

i know i wish we did put em in incorrectly... but it has been apart 3 times and i still dont see how we could have put them in wrong.

Oct 29, 2007 | 10:50 AM

#25

BoostEEd

Evolving Member

iTrader: (19)

Joined: Jan 2007

Posts: 400

Likes: 0

From: Lawrence, IN

Sounds like a timing issue to me. If it ran fine before and all you did was a cam install then you either have the wrong cams or you didn't reinstall them 100% correctly. Maybe your "experience" has you just going through the motions and not thinking about your install. Its easy to check TDC. Why not start there?

Oct 29, 2007 | 10:50 AM

#26

Sxhawnn

Evolving Member

iTrader: (5)

Joined: Jul 2004

Posts: 447

Likes: 0

Quote:

Originally Posted by TTP Engineering

You cannot install 2 intake cams on any Evo.

Hmm it was either two exhaust cams or two intake cams. I forget which. Sorry for the misinfo if it were two exhaust cams

Oct 29, 2007 | 10:55 AM

#27

h.funk

Evolved Member

iTrader: (4)

Joined: Aug 2006

Posts: 743

Likes: 0

From: Lake O. Oregon

I would pull them out and look to see if there are any inperfections. It kind sounds like a timing issue

Oct 29, 2007 | 11:09 AM

#28

06MRV8Killer

Evolved Member

iTrader: (28)

Joined: Apr 2007

Posts: 1,618

Likes: 0

From: Florida

Quote:

Originally Posted by E VOL IX

Last weekend me and a couple friends who work on cars for a living put in a set of cosi cams in our friends IX. This is like the 6th set of cams i have done in an evo so we know what we are doing. The install went fine but for some reason the car now sounds like it is a subaru and sputters like hell taking off.. We put it on the dyno and tried to tune it but it only made 272 and 217 ft/lbs.. took out the plugs that were fouled badly replaced them and the car was still running rich as hell down low. Took off the timing cover and the timing is DEAD on.... no codes what so ever in the car. Going down the highway the car is perfect at 14.8 to 15.2 afr's.... I already turned the cam position sensors to make sure they werent 180degrees out but it still sputters like hell..... has anyone run into a problem like this? Could we possibly have gotten a bad set of cams?

Didn't someone post about Cosworth having a certain lot of cams out there that were machined improperly which caused an installation problem? If so then you may have a set of them that could be bunk and causing the problem. Matter of fact I found the thread for you I hope that it helps and maybe you have a bad set or overlooked something.

https://www.evolutionm.net/forums/sh...sworth+problem

Oct 29, 2007 | 11:11 AM

#29

Soon2BEVO

Evolved Member

iTrader: (41)

Joined: Sep 2004

Posts: 4,653

Likes: 0

From: Toms River, NJ

Why not try reinstalling the stock cams again...

Oct 29, 2007 | 11:13 AM

#30

TTP Engineering

Account Disabled

iTrader: (465)

Joined: May 2005

Posts: 8,824

Likes: 2

From: Central FL

There is nothing wrong with Cosworth cams and this rumor is going to come to an end.

Unless the LOWER timing cover is being removed and crank trigger, front oil pump gear and camgear marks are being aligned, you are not doing it correctly.

You need to remove the lower cover, accessory belt, wpump pulley and recheck the marks under the cover.

Just because the marks on the gears to valve cover line up, does NOT mean the car is "in time".

Reply Share

First
Prev
2 / 9
Next
Last