Hmmm something bad seems to have happened with the replacement engine I got fitted

 

There didn't appear to be any problem when I picked the car up.

 

The engine sounds OK and it seems to run OK however when I drove it back yesterday my friend who was following me said it was smoking a lot just from the near side exhaust but I didn't notice as the car felt like it was running fine

 

This seems to have gotten worse today when ticking over the nearside ehxaust is 'splutterring' a bit like there is an intermittent misfire on that side and when you rev it you get copious amounts of white smoke from that exhaust - and I mean plenty of it!!

 

I popped to the garage across the road and they had a look and revved it quite a bit and said they thought it was a turbo but could not explain the splutterring so then they said it could be 'just about anything' which wasn't very helpful

 

I parked up outside the house for 15 mins and then asked the missus to rev the car so i could put some video up here and now it seems to be smoking a lot from both exhausts like it just got worse in those 15 mins

 

The guy from next door came out (who also runs a garage) and claimed it is both turbos because if you compress the intercooler pipes with your fingers then rev the engine it should force the pipes back out again against your fingers. You do feel a little pressure 'kick' when holding the intercooler pipes compressed and revving but he says it is not enough

 

I'm not sure this guy knows what he is talking about or not but I must admit when you rev the engine the guage on the boost controller does not go positive it goes from -70 to about 0. I would have to run the car on the road and watch the guage to be certain

 

Any suggestions please, no doubt when I take the car the few miles to Trentham on Sunday (so it can sit there looking pretty even if it is turned off so it don't smoke) I will have 19 more opinions as to what is wrong with my car now :huh: so I may as well ask here first

 

I'll upload the video if I can remember my youtube login lol

 

Rich

Edited June 14, 201312 yr by dicky96

When and iff you take off the pass side tub, 1st check the exhaust port on number 6 for oil before you start spending on changing turbos and i bet its drenched..as ive said my moneys on bore/piston/ring damage and theres no oil control on number 6.

Znut ... the Comp test has come bk at 180 across all cylinders .. kinda Rules out ..

 

but for peace of mind get one of these hook it up to your laptop and then u can check the bores and pistons for any damage

http://www.ebay.co.uk/itm/7mm-Inspection-Camera-Scope-USB-Digital-Endoscope-Borescope-Waterproof-5M-TE16-/261158714785?pt=UK_BOI_Medical_Lab_Equipment_Medical_Equipment_Instruments_ET&hash=item3cce45bda1

The thing is, it's a problem on only one bank as far as oil fouling & losing cylinders is concerned isn't it? The driver's side bank is fine, right?

Znut ... the Comp test has come bk at 180 across all cylinders .. kinda Rules out ..

 

but for peace of mind get one of these hook it up to your laptop and then u can check the bores and pistons for any damage

http://www.ebay.co.uk/itm/7mm-Inspection-Camera-Scope-USB-Digital-Endoscope-Borescope-Waterproof-5M-TE16-/261158714785?pt=UK_BOI_Medical_Lab_Equipment_Medical_Equipment_Instruments_ET&hash=item3cce45bda1

 

No damage to the bores, the garage has had a borescope down the bores...

best thing to do is Drop the exhaust off the down pipes and see witch one has loads of oil in it

 

Right. Option 1. Get the local garage to remove the turbos is a non starter - for some reason they seem very reticent to get involved with this job. However I will ask them to drop the exhaust from the downpipes and have a look as you suggest, if it is going to be worthwhile.

 

How much does it cost to rebuild my spare turbos? and I believe this is something you could do Mark?

 

Rich

The thing is, it's a problem on only one bank as far as oil fouling & losing cylinders is concerned isn't it? The driver's side bank is fine, right?

 

Pretty much so, yep. And 95% of the smoke is coming from the passenger side exhaust too. Plugs on the drivers side look clean (see middle one on pic I uploaded with three plugs shown, that came from drivers side)

 

http://www.300zx.co.uk/forums/showthread.php?170333-Lots-of-white-smoke-when-revving-engine&p=1740181&viewfull=1#post1740181

Edited June 19, 201312 yr by dicky96
link added

it is something i can do ... time scale is the problem ... i dont think im going to be free for the next few weeks at least

Znut ... the Comp test has come bk at 180 across all cylinders .. kinda Rules out .. but for peace of mind get one of these hook it up to your laptop and then u can check the bores and pistons for any damage

http://www.ebay.co.uk/itm/7mm-Inspection-Camera-Scope-USB-Digital-Endoscope-Borescope-Waterproof-5M-TE16-/261158714785?pt=UK_BOI_Medical_Lab_Equipment_Medical_Equipment_Instruments_ET&hash=item3cce45bda1

 

I hear you Mark...but checked by who as i find it a little strange that all six came back 180:confused: that seems high,ish for a old motor...

disclaimer...not saying Noel sold a worn engine but 180 is close to the "new motor specs"

JeffTT comp tested the engine and told me they were all 'within spec'. Maybe he can tell if they were all 180

 

Also I think Noel comp tested this engine - do you remember the results?

it is something i can do ... time scale is the problem ... i dont think im going to be free for the next few weeks at least

 

Rich ... Noel is going to speak to u

with time permitting me and him will pop over and take a look

 

- - - Updated - - -

 

I hear you Mark...but checked by who as i find it a little strange that all six came back 180:confused: that seems high,ish for a old motor...

disclaimer...not saying Noel sold a worn engine but 180 is close to the "new motor specs"

 

all so the garage right ?

I hear you Mark...but checked by who as i find it a little strange that all six came back 180:confused: that seems high,ish for a old motor...

disclaimer...not saying Noel sold a worn engine but 180 is close to the "new motor specs"

 

Mine was between 165 and 170 on all cylinders

JeffTT comp tested the engine and told me they were all 'within spec'. Maybe he can tell if they were all 180

 

Also I think Noel comp tested this engine - do you remember the results?

 

Ahhh i thought you mentioned another garage tested recently.... Remember Dicky mate whats good one day can easliy change another day and be no fault of anyone with these motors iff not inspected by a teardown after buying an unknown quantity like a 2nd hand engine

JeffTT comp tested the engine and told me they were all 'within spec'. Maybe he can tell if they were all 180

 

Also I think Noel comp tested this engine - do you remember the results?

 

Afraid not, said over the phone I had just dismissed them as they were spot-on :(

 

I personally think that the off side turbo has failed on the exhaust side. The amount of oil that came from just the plugs on the off side bank (cyls 2, 4 & 6), plus the fact that the threads are soaked with oil, would suggest a huge oil leak on that side. The turbo will have failed due to the seals drying out I'd expect.

Ahhh i thought you mentioned another garage tested recently.... Remember Dicky mate whats good one day can easliy change another day and be no fault of anyone with these motors iff not inspected by a teardown after buying an unknown quantity like a 2nd hand engine

 

Yeah they were also tested by the local garage yesterday - results came back 180 on all cylinders. He tested them cold and again when warmed up. So tahts three times they were checked by Noel, Jeff and the local guy

 

Rich

it is something i can do ... time scale is the problem ... i dont think im going to be free for the next few weeks at least

 

Rich ... Noel is going to speak to u

with time permitting me and him will pop over and take a look

 

- - - Updated - - -

 

 

all so the garage right ?

 

 

Ahh that's good to hear m8, much appreciated :biggrin: I'll get the garage to put the car back together in the morning.

 

Good news from my point of view is I am pretty much free anytime at the moment as this is my quiet time of year, work wise.

 

Rich

I hear you Mark...but checked by who as i find it a little strange that all six came back 180:confused: that seems high,ish for a old motor...

disclaimer...not saying Noel sold a worn engine but 180 is close to the "new motor specs"

 

Apparently, upon inspection, the big end bearings looked to have been changed recently as well.

Ahh that's good to hear m8, much appreciated :biggrin: I'll get the garage to put the car back together in the morning.

 

Good news from my point of view is I am pretty much free anytime at the moment as this is my quiet time of year, work wise.

 

Rich

 

Ask if they will drop the off side downpipe quickly.

1. Ask if they will drop the off side downpipe quickly.

 

2. Apparently, upon inspection, the big end bearings looked to have been changed recently as well.

 

 

1. OK Will do Noel - the car is still on the ramps anyway

 

2. Yes that is what Jeff told me, and is why he didnt' change them as I had requested. He also said that with the sump off he could tell all the pistons were OK as well, though he didn't explain how he could tell that.

 

Rich

if there has been any Melting of the piston/Rings ... u can see evidence on the under side of the piston and damage to the boars Most of the time

if there has been any Melting of the piston/Rings ... u can see evidence on the under side of the piston and damage to the boars Most of the time

 

OK well in that case then Jeff says they are good. Probably.

Afraid not, said over the phone I had just dismissed them as they were spot-on :(

 

The amount of oil that came from just the plugs on the off side bank (cyls 2, 4 & 6), plus the fact that the threads are soaked with oil, would suggest a huge oil leak on that side.

 

Just re-read this post m8. It's the nearside bank that has all the oil on it. (I called them 2,4,6 hope this has not caused confusion) and the nearside exhaust that has the smoke too. Does this mean you now want me to drop the nearside downpipe?

 

 

 

Rich

Near side rear turbo seal is one of the issues IMO.

yes .. just drop them both and check please

get some Pics of the turbo housings where the turbine is

and the amount of oil around

 

when we pop over we can do all the other checks from top

Near side rear turbo seal is one of the issues IMO.

 

Yeah, as ive said a few times the colour of the smoke and other things described is text book for rear seal failure. What confuses me though is that oil is also being combusted/entering the combustion chamber. I wonder if theres a blockage in the turbo oil return and its filling the turbo up its overflowing everywhere. Im just confused as to why oil is in the chambers, it cant locgically be sucked into the chambers through the exhaust manifold can it?

The amount of oil that's escaping whatever way its leaving, the seal would have to be virtually gone, unless its under backpressure and being forced out.

Mark, what about the EGR picking oil up from exhaust and sending it back to the manifold?????