What if you (temporarily) tape up the hose? I suspect unmetered air enters the manifold causing too lean mixture.
gr J
gr J
Technical Code Readers and Apps - any advice?
- Thread starter WyreWheels
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Technical
Code Readers and Apps - any advice?
Plugs look fine
The cracked breather will cause the MAP
To oil faul and cause hesitation on hesitation
I can't hear any hesitation in the video, you problely need to be there
Whether that's your only problem is hard to say
The easy test is ti temporary disconnect it completely and see if the symptoms clear up
The cracked breather will cause the MAP
To oil faul and cause hesitation on hesitation
I can't hear any hesitation in the video, you problely need to be there
Whether that's your only problem is hard to say
The easy test is ti temporary disconnect it completely and see if the symptoms clear up
OP
OP
WyreWheels
Member
The video is after I have used quite a lot of duct tape on it. Having said that, I’ve never revved it like that before, so I don’t have a “before” to know if it’s better or not.
OP
OP
WyreWheels
Member
I did give it a start and rev without the airbox on and the smaller pipe off the breather that goes to the left of the throttle body disconnected and it sounded quite responsive. It almost made me go back 30 years and amwant a K&N
OP
OP
WyreWheels
Member
New breather pipe bought and fitted. Possibly running worse than before 
very hesitant in the low to mid rev range, you can feel it jerking and kangarooing.
I’ve pushed plugs together, made sure HT leads are properly on and it’s still like being back in a single carb Mini with a dodgy choke on a wet Wednesday.
very hesitant in the low to mid rev range, you can feel it jerking and kangarooing.I’ve pushed plugs together, made sure HT leads are properly on and it’s still like being back in a single carb Mini with a dodgy choke on a wet Wednesday.
Did you get the other two plugs out
We only got photos of two
We only got photos of two
OP
OP
WyreWheels
Member
I didn’t go back to them to be honest. I’ll have a go at it tomorrow. It’ll give me chance to have a check on the breather too. As a matter of interest, what is the other narrow pipe connected to on the left hand side of the inlet manifold?
The small black and large black pipes are both breathers, at small throttle openings the small pipe is used at large opening the large pipe is used
The small pipe is known to get blocked
The small pipe is known to get blocked
OP
OP
WyreWheels
Member
Yesterday has been and gone, so I’ve just taken plugs 2 & 3 out.
This is plug 2 (left to right from the cambelt)
And plug 3.
I noticed on a trip to the shop last night that while cold, the hesitancy isn’t there anything like as much as when warmer. There’s still a delay in responsiveness when blipping the throttle too.
The plugs themselves are NGK “R”, DCPR7E-N.
This is plug 2 (left to right from the cambelt)
And plug 3.
I noticed on a trip to the shop last night that while cold, the hesitancy isn’t there anything like as much as when warmer. There’s still a delay in responsiveness when blipping the throttle too.
The plugs themselves are NGK “R”, DCPR7E-N.
What's the gap measure,.how many miles have they been in
Last photo the plug is burning a little more oil but not worrying so
They don't look a million miles out, but the long term fuel trims.were in the negative and the plugs are to the lean side, I guess something is reporting wrong to the ECU
Plot both the O2 sensors hot engine
At idle
At 2k rpm
At 3k rpm
Don't need to record for too long, just enough for the plots to stabilise
If you open the throttle butterfly what it looks like underneath
Last photo the plug is burning a little more oil but not worrying so
They don't look a million miles out, but the long term fuel trims.were in the negative and the plugs are to the lean side, I guess something is reporting wrong to the ECU
Plot both the O2 sensors hot engine
At idle
At 2k rpm
At 3k rpm
Don't need to record for too long, just enough for the plots to stabilise
If you open the throttle butterfly what it looks like underneath
OP
OP
WyreWheels
Member
Back on it, sort of. Bought a Bluetooth ELM427 reader and it just lights up. Says it’s iOS compatible but neither my iPhone or iPad with the MultiECUScan app connect to it. Windows 11 laptop won’t run the software at all. Poop.
The two oxygen sensor readings on the BM500 are numbers only and are all over the place, so that’s no good to anyone. These are two snaps taken at idle, values would go to 0.00something at times. What I did notice was as one increased, the other seemed to decrease.
Going to return the ELM327 reader, total pants.
The two oxygen sensor readings on the BM500 are numbers only and are all over the place, so that’s no good to anyone. These are two snaps taken at idle, values would go to 0.00something at times. What I did notice was as one increased, the other seemed to decrease.
Going to return the ELM327 reader, total pants.
