Fjord V10 Problems

axisg

axisg

Royal Smart Person
Jul 17, 2007
2,291
713
113
YYZ
#1
I know it's not Gbody but the Ford Forums dont seem to be too keen to help newbies.

Picked up a 99 F450 for a work truck. Gas v10. Its got 268 k kms ( 166 K Miles ), and about 11000 hrs on the hobbes meter.

Starts fine after sitting overnite with a small puff of blue ( ish ) smoke. Drives fine, no stumbles, no codes. Bring it to the jobsite and it can idle for 30 mins then suddenly for 30 seconds or so it is slightly cloudy then back to clear. Keep it running at idle like this for 3-4-6 hours. Then when we leave the jobsite it smokes like a train for 5 mins or so. White at first with some blue with a sour smell. Coolant and oil levels seem unchanged in both the colour and level.

This truck sat for almost 2 years, no service records but it appears to be well maintained ( even the AC works ). I am thinking valve guides but by gut says Head Gasket or Intake Gasket.

Any other thoughts before I tear into this ?
 
W

Wageslave

G-Body Guru
Jan 25, 2017
733
483
63
#2
Sounds like the start up smoke is valve guide seals. Would do a leakdown check on the cooling system just to be on the safe side, though.

I have to ask why you are idling that much, though? That is rough on most engines, and that V10 is awful thirsty under the best of conditions.
 
Streetbu

Streetbu

G-Body Guru
Supporting Member
May 22, 2011
635
698
93
Central NY
#4
You can guess, or you can do a leak down test and verify the cause before you fire up the parts cannon. Your choice.
 
Last edited:
pontiacgp

pontiacgp

Canadian Prime Minister
Mar 31, 2006
23,522
4,238
113
Kitchener, Ontario
#5
I wasn't aware that Sweden build Fjord V10's....:p

for a leak down test I cheat, I use the adapter I use to change valve springs on installed heads. With the valve covers off I pressurize each cylinder making sure the valves are closed and you can hear if air is escaping from a valve or if it is the rings from the crankcase

proxy.php?image=http%3A%2F%2Fwww.lextreme.com%2Fvalve%2Fvs_04.jpg&hash=d410f226ed52b1703b815a156888d7ca
 
bob64

bob64

G-Body Guru
Mar 30, 2017
585
317
63
Niagara Falls, Canada
#6
At any point is there a rough idle or rough under throttle. Ford V-10 is notorious for coil pack breakdown, kicking in an out. Well honestly it just might be a Triton thing so same difference. If they are going it will blow smoke, left over raw fuel.

Watch your temperature, see if it has risen when it starts to blow smoke, warping allowing coolant in cylinder chamber. Plugs will tell you a story.

When them engines work, they work well but haven't seen many high mileage ones.

As for a leak down test, you'll have to do it when engine is hot, have fun with that!! Reason for hot engine is that it's not a cold engine leak only happens when at running temperature.

It's a hard chase to find, but l have seen head flex when warm or underload. Sooner or later it will blow head gasket then you'll know. The smell is a coolant smell.
 
axisg

axisg

Royal Smart Person
Jul 17, 2007
2,291
713
113
YYZ
#7
Thanks for the suggestions thus far. I guess I need a back story to the hows and whys. Getting into some side work at a friends Co working at heights with a bucket truck ( hence the long idle times ). Picked this particular beauty up for the sum of its parts ( thinking the box would re-body to another chassis ). Given the age of the truck the cab is really pretty solid, the box and lift are in excellent shape.

So on to the drivetrain. Oil looks good, coolant looks good, trans fluid is clear and not burnt. I have put a tank of fuel thru it, seafoam then oil change & fuel filter. It had a couple hours run up and down the highway in the last week and it always seems to run better afterwords.

In day to day driving if it wasn't for the smoke you would not know anything is wrong with it. Will dig a little deeper into the Coil On Plug, then maybe even pull the plugs in it to see what they look like. But with everything I read it will supposedly be a chore.

The smoke plain stinks. It's not oily ( blowby ) or sweet ( coolant ) but almost acidic like an electrical fire. Could be the orange motorcraft coolant smells different than the green stuff when it burns ? I have not noticed anything missing from the overflow either so if it is eating coolant it is not much. If it's not something simple I think it will get parked or at least back burnered until I find a diesel unit. Those burn $3-$5 / hr in fuel. This thing is closer to $15- $20 LOL
 
pontiacgp

pontiacgp

Canadian Prime Minister
Mar 31, 2006
23,522
4,238
113
Kitchener, Ontario
#8
could it be the catalytic convertor that is disintegrating...
 
-83MONTESS-

-83MONTESS-

Moderator
Moderator
Nov 4, 2010
4,437
374
83
Bellevue, Ohio
#9
Maybe plugs are being fouled out? Either by fuel or the oil leaking into the cylinder? I guess the plugs gotta come out anyway to do a leak down test....
 

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