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Forum: Performance and Technical chat 09-20-2021, 12:41 PM
Replies: 1
Views: 87
Posted By blue62
What year is the car? How many miles? Any...

What year is the car?
How many miles?
Any modifications??
Are you running a stock air filter???
Any recent work done on it?
Any other recent issues?
What does it idle like??? smooth and...
Forum: Boxster General Discussions 09-20-2021, 11:16 AM
Replies: 5
Views: 180
Posted By blue62
Don't use off brand sensors. They do not last. ...

Don't use off brand sensors. They do not last.
Use Bosch only when buying MAF or O2 sensors.

If your using an air filter like a K&N that requires that it be "oiled" they destroy MAF sensors...
Forum: Performance and Technical chat 09-17-2021, 03:05 PM
Replies: 45
Views: 932
Posted By blue62
yup with that info certainly sounds like a...

yup with that info certainly sounds like a mechanical issue rather then heat.
Forum: Performance and Technical chat 09-17-2021, 06:24 AM
Replies: 45
Views: 932
Posted By blue62
From what I see in your picture in post #15 and...

From what I see in your picture in post #15 and what your describing here. (valves broken off). There was a mechanical issue. Broken wrist pin, broken rod, valve spring or lifter issue. will be...
Forum: Performance and Technical chat 09-16-2021, 07:11 AM
Replies: 45
Views: 932
Posted By blue62
I just RE-viewed the picture in post #15 you can...

I just RE-viewed the picture in post #15 you can see ring bits, valve head, and other bits.
If that hole got hot enough to cause a valve to drop you should see signs of excess heat on the ring...
Forum: Performance and Technical chat 09-16-2021, 06:21 AM
Replies: 45
Views: 932
Posted By blue62
Perhaps you could look at the exhaust valve seats...

Perhaps you could look at the exhaust valve seats and see if there is evidence of excessive heat. Or if there are other signs of excessive heat on the head, piston, or any area around cyl. #2. The...
Forum: Performance and Technical chat 09-15-2021, 07:03 PM
Replies: 45
Views: 932
Posted By blue62
I would think that if what you describe really...

I would think that if what you describe really happened then exhaust valves would be burnt not dropped.
You can burn hell out of valves and never drop them. I would want more "proof" that a vacuum...
Forum: Boxster General Discussions 09-14-2021, 12:13 PM
Replies: 4
Views: 197
Posted By blue62
Also do as Gabe says. Pressure test the coolant...

Also do as Gabe says.
Pressure test the coolant system, after replacing the coolant tank.
A coolant system pressure test kit can be had from Harbour Freight for around $90.00.
The kit has adapters...
Forum: Boxster General Discussions 09-13-2021, 11:21 AM
Replies: 4
Views: 197
Posted By blue62
You could do a compression test and a vacuum...

You could do a compression test and a vacuum test.
Those two tests " DONE CORRECTLY" will give you a very good baseline on engine condition.

Correct your coolant leakage problem first.
Forum: Performance and Technical chat 09-04-2021, 05:32 PM
Replies: 16
Views: 596
Posted By blue62
As near as I can tell your hookup is good. The...

As near as I can tell your hookup is good.
The engine also pulled good vacuum before the needle action started.
But the needle action points to a valve train issue.
Something that would come and...
Forum: Boxster General Discussions 09-03-2021, 12:02 PM
Replies: 2
Views: 78
Posted By blue62
P1119 is for the Pre-Cat O2 sensor on bank -2

P1119 is for the Pre-Cat O2 sensor on bank -2
Forum: Performance and Technical chat 09-02-2021, 08:35 PM
Replies: 9
Views: 223
Posted By blue62
Yes they are saying the same thing I described. ...

Yes they are saying the same thing I described.
Bottom line is the DME/ECU is attempting to create an average of 14.7-1 AFR
or Stoichiometric.
Forum: Performance and Technical chat 09-02-2021, 01:22 PM
Replies: 9
Views: 223
Posted By blue62
A few very limited things I can tell you is. ...

A few very limited things I can tell you is.
Motronic or the DME/ECU was as you may already know developed by Bosch.
I have only found limited info on the inner workings.
Searching everything I...
Forum: Performance and Technical chat 09-02-2021, 07:10 AM
Replies: 9
Views: 223
Posted By blue62
Yes in simple terms that is sort of correct. ...

Yes in simple terms that is sort of correct.
There is an operating range of both the O2 sensor and the DME
What I described is (as I say in very simple terms) how the STFT strategy works.
The...
Forum: Performance and Technical chat 09-01-2021, 07:49 PM
Replies: 9
Views: 223
Posted By blue62
First: O2 sensors "do not" serve as witness to...

First:
O2 sensors "do not" serve as witness to MAF data.
They serve witness to what the DME is doing with fuel.... in an indirect manner.
O2 sensors compare oxygen in the exhaust to oxygen in...
Forum: Performance and Technical chat 09-01-2021, 02:32 PM
Replies: 9
Views: 223
Posted By blue62
Short answer: MAF Which includes Intake Air...

Short answer:
MAF Which includes Intake Air Temp, TPS, coolant temp, provide the main input.

O2 sensors provide feedback =(Closed loop) info. in the form of voltage to the DME/ECU as...
Forum: Performance and Technical chat 09-01-2021, 07:18 AM
Replies: 16
Views: 596
Posted By blue62
So a couple of things. First you should really...

So a couple of things.
First you should really hold the gauge in you hand or find a way to isolate it from the car. I know you laid it on the car so you could video but the needle will pick up...
Forum: Boxster General Discussions 08-30-2021, 06:01 PM
Replies: 18
Views: 392
Posted By blue62
Which car is that off of??

Which car is that off of??
Forum: Boxster General Discussions 08-29-2021, 01:55 PM
Replies: 25
Views: 722
Posted By blue62
VK, Sounds like it could be the water (coolant)...

VK,
Sounds like it could be the water (coolant) pump.
Once you get it in the air and remove the body under panels you will be able to get eyes on it.
The coolant at the front could be from coolant...
Forum: Boxster General Discussions 08-28-2021, 05:00 PM
Replies: 25
Views: 722
Posted By blue62
VK, I should have mentioned this in my first...

VK,

I should have mentioned this in my first post.:eek:

Another item that is a common coolant system problem is the plastic coolant fill tank in the rear trunk.
They develop hairline cracks...
Forum: Boxster General Discussions 08-28-2021, 02:01 PM
Replies: 25
Views: 722
Posted By blue62
From what I can tell in your picture I am looking...

From what I can tell in your picture I am looking at the the area where the aluminum pan (brace) and the plastic under body trays meet.
Remove that plastic under body tray and you should see where a...
Forum: Boxster General Discussions 08-28-2021, 11:10 AM
Replies: 25
Views: 722
Posted By blue62
First thing to do is a visual inspection of the...

First thing to do is a visual inspection of the suspected area of the leak.
If you find nothing obvious (like a leaking hose).
Then get a coolant system pressure tester.
Places like Harbour...
Forum: Performance and Technical chat 08-27-2021, 07:05 PM
Replies: 5
Views: 200
Posted By blue62
Old school rule of thumb was add 10psi to idle...

Old school rule of thumb was add 10psi to idle oil pressure for every 1000 RPM.
Engine oil at operating temp.
That was on 50's-60's engines. probably still "close" today.
Forum: Boxster General Discussions 08-27-2021, 06:42 PM
Replies: 12
Views: 251
Posted By blue62
Yes I believe E7 is the only fuse for the A/C...

Yes I believe E7 is the only fuse for the A/C ....heater system.
Forum: Boxster General Discussions 08-27-2021, 06:18 PM
Replies: 12
Views: 251
Posted By blue62
Did you check your fuses????

Did you check your fuses????
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