Search found 13 matches

by chad66
Tue Feb 09, 2021 5:24 am
Forum: Help me fix my car
Topic: BMW E66 ENGINE MISFIRE
Replies: 0
Views: 13444

BMW E66 ENGINE MISFIRE

Hello again, Need some help to identify a misfire on a BMW E66 N62 engine.... To explain a bit of the problem here goes...Cold engine have a misfire on cyl 6,7 and sometimes 3, persistent on cyl 6 & 7. However, after awhile once the engine warms up no more misfire... Initially found a lot of air lea...
by chad66
Wed Aug 26, 2020 6:28 am
Forum: Help me fix my car
Topic: Audi TT - incyl pressure
Replies: 7
Views: 8254

Re: Audi TT - incyl pressure

Hello Everyone, TT problem solved..... As we suspected an issue on the ex side, we progressed to remove the valve cover and examine the lifters, rockers and camshaft and to see if any oil pressure blockages. all checked out ok except for the camshaft, Although no visible damage we fortunately had an...
by chad66
Tue Aug 25, 2020 4:39 am
Forum: Help me fix my car
Topic: Audi TT - incyl pressure
Replies: 7
Views: 8254

Re: Audi TT - incyl pressure

So sorry, am very new to the use of the picoscope and am not really sure how to setup the sys. will try and revert with a zoomed out scan.
by chad66
Mon Aug 24, 2020 3:03 pm
Forum: Help me fix my car
Topic: Audi TT - incyl pressure
Replies: 7
Views: 8254

Re: Audi TT - inc, cyl pressure

adding cyl 3 waveform. could this be anything to do with timing ????
by chad66
Mon Aug 24, 2020 2:48 pm
Forum: Help me fix my car
Topic: Audi TT - incyl pressure
Replies: 7
Views: 8254

Audi TT - incyl pressure

Hello

May I request some enlightenment on analysis of the attached waveform.

I can see some exhaust restrictions of some kind but not sure what it could be.
by chad66
Mon Aug 24, 2020 4:48 am
Forum: Help me fix my car
Topic: 2014 BMW F30 -N13 - Engine misfire
Replies: 19
Views: 39669

Re: 2014 BMW F30 -N13 - Engine misfire

Thank you Steve,

Will try the replacing lifters. As regards Oil pump... Use the pressure sensor port to test it right


Regards
by chad66
Mon Aug 17, 2020 3:24 pm
Forum: Help me fix my car
Topic: Mercedes CLS-350 Misfire on Cyl 2
Replies: 1
Views: 3744

Mercedes CLS-350 Misfire on Cyl 2

Hi Everyone Yes its me again, sorry but i need assistance, have a 2009 Mercedes CLS 350 with a misfire on cyl 2 would'nt call it intermittent. but again its a bit strange as it comes up after a bit of driving and then stays consistent up until the engine is cold again. tried the usual stuf of swappi...
by chad66
Mon Aug 17, 2020 2:53 pm
Forum: Help me fix my car
Topic: 2014 BMW F30 -N13 - Engine misfire
Replies: 19
Views: 39669

Re: 2014 BMW F30 -N13 - Engine misfire

Hello, Thank you all for the input. Have now removed the camshaft, the eccentric shaft and the lifters, Dont see anything in particular that catches the eye. cam lobes etc measure out perfect in relation to each other, so does the lobes on the eccentric shaft, lifter are nice and tight no free play ...
by chad66
Mon Aug 10, 2020 1:38 pm
Forum: Help me fix my car
Topic: 2014 BMW F30 -N13 - Engine misfire
Replies: 19
Views: 39669

Re: 2014 BMW F30 -N13 - Engine misfire

Hi Iver,

Thanks for the input, was wondering though when i have the valve tronics disconneted dont have the misfire. If it were a failing Lifter I should see the problem come up even if its intermittent. What do you think ?
by chad66
Mon Aug 10, 2020 8:38 am
Forum: Help me fix my car
Topic: 2014 BMW F30 -N13 - Engine misfire
Replies: 19
Views: 39669

Re: 2014 BMW F30 -N13 - Engine misfire

Thank you so much guys for the very informative insight... To additionally add to the diagnostics, I have disconnected the valve tronics motor and am attaching waqveforms for the suspect cyl (Cyl 2) with valvetronics disconnected (As i understand, correct me if wrong, once valvetronics is disconnete...