About to set my car on fire... a finger in the right direction would be very appreciated.

[Unbridled5.0]

I would never ever guess leaking past sparkplug threads. I'm not arguing with your experience, it just seems so implausible. To me it implies combustion pressure would push past the plug.

Anyway, what the OP is describing is pretty classic valve sten seals. It just doesn't make sense to start after reloading a tune... Hope it doesn't turn out to be bad.

Believe you me, nobody was more surprised or pissed off about making that discovery than I was. Lol

Also, combustion byproducts have other (easier) avenues of escaping like past ring gaps and then the pcv system. Oil sitting on top of a plug only has the one way out.

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[shogun32]

Runs good, but if it sits for more than 20-or 30 minutes, it smokes on start up. It clears up, but its a big cloud of smoke. I'll try and get video of it at lunch and I'll post a link.

I'm sure my ignorance is showing, but can you pull off the cam covers and see if there is an usual amount of oil pooled above the exhaust valves? If you take a mity-vac or turkey baster and empty it, does it still smoke?

Can you bore-scope the cylinders and see if there is a bunch of oil sitting on the crown/skirt?

How about after a dry-crank?

 

[HKusp]

Okay, here's the weird thing. I have driven the car probably 100+ miles and probably 10-12 start-ups since doing the gaskets and solenoid on Saturday. Every time it sat for more than 30 minutes, including 1st start-up this morning, it smoked. Today mid-day start to leave for lunch, it barely smoked. It sat for about an hour at lunch before I went back to work, and it barely smoked again. So....

 

[HKusp]

Have you installed new phazers or for some reason needed to time the cams?

Have you logged and are the intake cams different?

There are 12 pages sorry if this has been asked and answered.

I have logged an idle in PCMTec with some revs since the TSB work. I did new cam phasers, chains, tensioners, opg's and crank sprocket during the rebuild. Original cams were re-used. ARP cam tower bolts as well as head studs, mains, etc.

 

[K4fxd]

I have logged an idle in PCMTec with some revs since the TSB work. I did new cam phasers, chains, tensioners, opg's and crank sprocket during the rebuild. Original cams were re-used. ARP cam tower bolts as well as head studs, mains, etc.

I'm wondering if you got the cam a tooth off. Log desired cam position vs actual and see if both sides match. Use as few parameters as you can

 

[HKusp]

I'll see what I can get done in the next day or so.

 

[HKusp]

Still smoking.....

 

[andrewtac]

Maybe it was my springs, MMR warns against using after market springs with their upgraded chains

hi

 

[shogun32]

Maybe it was my springs, MMR warns against using after market springs with their upgraded chains

you managed to sheer apart a hi-velocity chain? damn!

 

[BreckinHardin]

Has anyone discovered a fix for our P0340 issues? Is anyone else still like me and the issues only occurs with higher RPM? @andrewtac

 

[andrewtac]

Will post when I get it together

 

[baevid]

Just skimming through this thread after messaging honeybadger that I was having some issues that could possibly be the harness.

So for me after a fresh build:

-Gen 3 Stage 3 FFRE short block​

-Gen 2 heads, stock cams​

-PAC 1234X valve springs​

-ARP head studs​

-All new timing components (Boss tensioners, GT350 phasers, chains, guides, etc)​

-New Boundary OPG and crank sprocket​

-New GT350 oil pan and pump​

-Gen3 intake manifold, IMRC locked​

-ATI Super Damper​

The local shop has driven it around for 200-300mi before handing it back to me to do the Lund base tune. I go through this:

-Idle logging goes fine​

-stationary 1500rpm hold logging goes fine​

-stationary 2500rpm hold logging goes fine​

-stationary 3500rpm hold logging goes fine​

-driving 2500-5000rpm slow climb and then letting off, the idle gets super rough and throws a P0365 and P0369 error code. If i turn off the car and back on, the idle is normal again.​

P0365 Camshaft Position Sensor "B" Circuit (Bank 1)
P0369 Camshaft Position Sensor “B” Circuit Intermittent Bank 1

i tried it once more and again… it seems like at 5000rpm during the deceleration, it throws the codes so seems easily replicable.

Joe Irwin from FFRE called me to throw in some input and verified a few things with me:

-There’s no concerning knocking/tapping/slapping sounds going on​

-Oil pressure at least from my in-cabin gauges seemed fine​

-No backfiring as I’m seeing this issue during the deceleration​

-Compression numbers seem consistent bank to bank (180-195 across the board)​

-Mentioned that it wouldn’t hurt to replace the VCT solenoids but it’s unlikely the issue if there’s no noticeable sounds happening​

My local shop has tried to replace that camshaft position sensor, checked the wiring and plugs in the general area but issue still happens. They did find some area along the harness that was burnt though which they said they tried to repair but still, no luck yet.

I have an early Gen2 Mustang so obtaining another harness seems a bit harder as it’s on back order from Ford so i may be down a few more months if I’m waiting for a brand new harness.

This seems very similar if not the same as what’s going on with others in this thread right? Mine is just on the passenger exhaust bank. Just going through as much as I could to narrow it down by mechanical or electrical issue.

 

[BreckinHardin]

Just skimming through this thread after messaging honeybadger that I was having some issues that could possibly be the harness.

So for me after a fresh build:

-Gen 3 Stage 3 FFRE short block​

-Gen 2 heads, stock cams​

-PAC 1234X valve springs​

-ARP head studs​

-All new timing components (Boss tensioners, GT350 phasers, chains, guides, etc)​

-New Boundary OPG and crank sprocket​

-New GT350 oil pan and pump​

-Gen3 intake manifold, IMRC locked​

-ATI Super Damper​

The local shop has driven it around for 200-300mi before handing it back to me to do the Lund base tune. I go through this:

-Idle logging goes fine​

-stationary 1500rpm hold logging goes fine​

-stationary 2500rpm hold logging goes fine​

-stationary 3500rpm hold logging goes fine​

-driving 2500-5000rpm slow climb and then letting off, the idle gets super rough and throws a P0365 and P0369 error code. If i turn off the car and back on, the idle is normal again.​

P0365 Camshaft Position Sensor "B" Circuit (Bank 1)
P0369 Camshaft Position Sensor “B” Circuit Intermittent Bank 1

i tried it once more and again… it seems like at 5000rpm during the deceleration, it throws the codes so seems easily replicable.

Joe Irwin from FFRE called me to throw in some input and verified a few things with me:

-There’s no concerning knocking/tapping/slapping sounds going on​

-Oil pressure at least from my in-cabin gauges seemed fine​

-No backfiring as I’m seeing this issue during the deceleration​

-Compression numbers seem consistent bank to bank (180-195 across the board)​

-Mentioned that it wouldn’t hurt to replace the VCT solenoids but it’s unlikely the issue if there’s no noticeable sounds happening​

My local shop has tried to replace that camshaft position sensor, checked the wiring and plugs in the general area but issue still happens. They did find some area along the harness that was burnt though which they said they tried to repair but still, no luck yet.

I have an early Gen2 Mustang so obtaining another harness seems a bit harder as it’s on back order from Ford so i may be down a few more months if I’m waiting for a brand new harness.

This seems very similar if not the same as what’s going on with others in this thread right? Mine is just on the passenger exhaust bank. Just going through as much as I could to narrow it down by mechanical or electrical issue.

Yours is probably either solenoids or phasers. But if it's not, it will be an interesting fight. Please keep us updated

 

[baevid]

Is there anything in a log that would specifically point to a phaser being the issue? I’ll ask my shop to replace all the VCT solenoids first though.

 

[BreckinHardin]

Is there anything in a log that would specifically point to a phaser being the issue? I’ll ask my shop to replace all the VCT solenoids first though.

Solenoids are easy. I'd replace them yourself if you are capable. In the logs you need to be monitoring VCT demanded and actual angle. See if they match/when they default to 0.

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