NefMoto > Technical > Data Logging > Take a look at those logs pls
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Author Topic: Take a look at those logs pls  (Read 21448 times)
professor
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« Reply #15 on: April 15, 2012, 12:51:24 AM »
I did injectors repositioning and new log attached.
All logs and those logs are with NLS funtion.
« Last Edit: April 15, 2012, 12:54:55 AM by professor » Logged
Seat Ibiza MK4 Cupra 1.8t 20V, stg3.
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professor
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« Reply #16 on: April 15, 2012, 03:57:56 AM »
Wrong log's format reattached.
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professor
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« Reply #17 on: April 17, 2012, 01:01:55 AM »
Up and good morning looking for some opinions  Smiley
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Seat Ibiza MK4 Cupra 1.8t 20V, stg3.
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professor
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« Reply #18 on: May 25, 2012, 08:22:19 AM »
Compression ratio was measured again and problem revealed:
1st cylinder 11.8
2nd cylinder 9.8
3rd cylinder 11.2
4th cylinder 11.4

After feed cylinder 2 with oil, compression, measured again and reached 15. Cant be sure for the reason of the problem, but car doesn't burn oil or water so i guess should be a valve (probably exhaust one) problem.
Any thoughts?
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"Those 1.8T 20V machines are really tough" ©
ibizacupra
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« Reply #19 on: July 26, 2012, 04:07:42 AM »
Quote from: professor on May 25, 2012, 08:22:19 AM
Compression ratio was measured again and problem revealed:
1st cylinder 11.8
2nd cylinder 9.8
3rd cylinder 11.2
4th cylinder 11.4

After feed cylinder 2 with oil, compression, measured again and reached 15. Cant be sure for the reason of the problem, but car doesn't burn oil or water so i guess should be a valve (probably exhaust one) problem.
Any thoughts?

leak down test next then to try and determin where from..
cyl head off tho sound inevitable
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professor
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« Reply #20 on: July 26, 2012, 06:31:10 AM »
No leaks, vacuum system and ic were tested in every detail.
I ll check the bolts of the cyl head to see if all are tighten evenly.
More when done this.
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Seat Ibiza MK4 Cupra 1.8t 20V, stg3.
"Those 1.8T 20V machines are really tough" ©
prj
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« Reply #21 on: August 22, 2012, 03:11:11 AM »
Quote from: professor on July 26, 2012, 06:31:10 AM
No leaks, vacuum system and ic were tested in every detail.
I ll check the bolts of the cyl head to see if all are tighten evenly.
More when done this.


A leakdown test has absolutely nothing to do with your intake and IC.
Also, you got it the wrong way around. If you add oil and the Compression goes up, then it's usually the rings/bores.
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PM's will not be answered, so don't even try.
Log your car properly.
professor
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« Reply #22 on: August 22, 2012, 04:39:43 PM »
Quote from: prj on August 22, 2012, 03:11:11 AM
A leakdown test has absolutely nothing to do with your intake and IC.
Also, you got it the wrong way around. If you add oil and the Compression goes up, then it's usually the rings/bores.

Correct, but we add much oil, 10-15ml so whenever the problem is wasn't revealed that way.
Now compression is ok, after using brand name engine cleaner, 11.8, 11.3, 11.6, 11.5 but knock volts on 2nd cyl are too much. More than 65V, varied from 40V to 72V, at WOT no matter pressure level (1bar, 1.7bar).
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Seat Ibiza MK4 Cupra 1.8t 20V, stg3.
"Those 1.8T 20V machines are really tough" ©
professor
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« Reply #23 on: October 15, 2012, 06:51:17 AM »
So problem is now solved.

The root of the problem was loosen exhaust valve guides and 6 (a bit) bended exhaust valves too. Also intake valves had some deposits on its edges.

After machinery car works now very good.

Cheers.
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Seat Ibiza MK4 Cupra 1.8t 20V, stg3.
"Those 1.8T 20V machines are really tough" ©
ibizacupra
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« Reply #24 on: October 19, 2012, 09:20:56 AM »
Quote from: professor on October 15, 2012, 06:51:17 AM
So problem is now solved.

The root of the problem was loosen exhaust valve guides and 6 (a bit) bended exhaust valves too. Also intake valves had some deposits on its edges.

After machinery car works now very good.

Cheers.

thankyou for confirming and letting us know
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