pre cat griffs -petrol fumes
Discussion
Any griff owners suffering from fumes getting into their cars, I have had this problem for some time however it hasn't really been a problem cos I usually drive with the top down or for short blasts only, however I made a 600 mile return trip in it over the weekend and as the weather was mainly wet the roof was up for the whole trip, since returning from the trip I have felt very light headed and quite dizzy, even 4 days on i dont feel right, I have now made an appointment to see a doctor to get checked out, was just wondering if any other griff owners had experienced any similar experiences.
thanks in advance.
Ian.
thanks in advance.
Ian.
Might be Carbon Monoxide from the exhaust.
A couple of bolts on the back of the right manifold work themselves lose very few thousand miles and the blowing gases come direct into the cockpit giving me a grim headache after a long journey.
Had CO poisoning when a kid and certainly the symptoms sound similar to yours.
A give away that the manifold may be blowing is that you keep looking in your mirrors for the world's fastest combine-harvester which sounds like it is trying to overtake.
A couple of bolts on the back of the right manifold work themselves lose very few thousand miles and the blowing gases come direct into the cockpit giving me a grim headache after a long journey.
Had CO poisoning when a kid and certainly the symptoms sound similar to yours.
A give away that the manifold may be blowing is that you keep looking in your mirrors for the world's fastest combine-harvester which sounds like it is trying to overtake.
Check the TPS voltage, the AFM settings and think about getting your injectors cleaned/checked.
If the injectors are dirty/F**cked, then you get less atomisation and the unburnt fuel (hydrocarbons, I think) stink like hell.
Mine used to stink, to the extent you could smell the scent of it on your clothes when you got home.
If the injectors are dirty/F**cked, then you get less atomisation and the unburnt fuel (hydrocarbons, I think) stink like hell.
Mine used to stink, to the extent you could smell the scent of it on your clothes when you got home.
some of the pre cats do tend to kick up a bit of a stink. went for a spin in a 4.3 a few years back and i remember the fuel smell/vapours at low speed was quite overpowering! once you get going it does tend to go away after a short time. didn't bother me though, i like the smell of petrol! 
Edited by forthright MC on Wednesday 6th September 17:47
Hi Ian - my pre cat can get a little heady inside on a moderate to long run and I have been told it is most likely to occur when the roof is up but the windows are part open, something to do with the venturi effect, for those who now about these things,drawing the fumes into the cabin.
Not sure what the answer is but if its none of the above that the rest of the guys have suggested then it may be as simple as this.
Best wishes
Not sure what the answer is but if its none of the above that the rest of the guys have suggested then it may be as simple as this.
Best wishes
I run a 500 with no cats,and its mapped on the rich side for smoothness and performance.You shouldn't get any smells from underbonnet,as long as exhaust joints are tight,and all fuel lines are sound.You can get the smell of hydrocarbons from the rear,when stood in traffic etc,but thats it.
Theres no excuse for this smell on the move,if everything is sealed well underbonnet imho.I do love the smell of hydocarbons myself though
Theres no excuse for this smell on the move,if everything is sealed well underbonnet imho.I do love the smell of hydocarbons myself though
Just another thought.A freind of mine had a griff which was burning a huge amount of oil,whilst doing this it was also discolouring the carpet of the rear parcel shelf black.He had the vents in his rear bulkhead,where i have speakers.So is it possible that without an airtight boot seal/leaking exhaust or some such,that you could be getting the fumes in through this way?
i had similar problems with my pre cat; it seemed that the fumes from the exhaust were sometimes seeping in to the car via the boot seal and so a simple solution was to fit stainless steel tips on the exhaust and extend them slightly which solved the problem. I had the exhaust seals checked too and they turned out fine as this can also cause this problem as can leaking fuel pipes. Now I don't get any fumes in the car which is certainly better for my health!
mongoose said:
Just another thought.A freind of mine had a griff which was burning a huge amount of oil,whilst doing this it was also discolouring the carpet of the rear parcel shelf black.He had the vents in his rear bulkhead,where i have speakers.So is it possible that without an airtight boot seal/leaking exhaust or some such,that you could be getting the fumes in through this way?
awww shucks Mike...am I your friend
...still using blutty oil but not as much methinks. Discolouring has stopped but Iv put speakers in now but they are on spacer rings for venting
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