david johnson Posted June 11, 2007 Report Share Posted June 11, 2007 My PI TR6 I am advised by the exhaust smell is running rich. How do you adjust this please? David Johnson Quote Link to post Share on other sites
jean Posted June 11, 2007 Report Share Posted June 11, 2007 David, if you have no knowledge about the system it's best to take your car to a Lucas expert. First they will have to find the reason, as there could be several. Mostly they start with the system pressure before touching the calibration. A novice could only deteriorate the condition, at least that's my opinion. If you post your exact location someone from the forum will probably advise you about a specialist in the vicinity Quote Link to post Share on other sites
dave-lewis Posted June 11, 2007 Report Share Posted June 11, 2007 My PI TR6 I am advised by the exhaust smell is running rich. How do you adjust this please? David Johnson Hi Dave, There won't be many TR6 pi's that don't smell "petrolly" or run rich (mine included) even the best set up systems have this symptom. If it is really bad, do as Jean says and have the system checked out with someone who understads the Lucas setup and has the equipment to do it. Regards, Quote Link to post Share on other sites
Richard Crawley Posted June 11, 2007 Report Share Posted June 11, 2007 Checking the mixture by smell is a new one on me, what MPG are you getting? Just to reiterate what the other guys have said, unless you really know what your doing don’t even attempt adjusting it; & even then, IMO, it’s not worth the hassle! If you’re competent with spanners, it’s easy to fit reconditioned units yourself but if you’re not sure, take it to a specialist to get it sorted. Quote Link to post Share on other sites
Goswell Posted June 12, 2007 Report Share Posted June 12, 2007 If you can get to Cambridge motor sports the person who runs the rolling road has a method of adjusting the metering unit. He found mine running weak and adjusted it slightly, gave me 5 bhp at the wheels. Quote Link to post Share on other sites
A11NFH Posted June 16, 2007 Report Share Posted June 16, 2007 My PI TR6 I am advised by the exhaust smell is running rich. How do you adjust this please? David Johnson The mixture is solely governed by the metering unit, underneath the plastic dome on the top, also you could have the incorrect metering unit for the car, CR and CP cars have different units, usually denoted by the colour of the plastic dome, i.e black on early cars, green on later. the adjustment is best left to a re conditioner as is set up on a machine, although a competant mechanic may be able to do it, but best not to mess with it yourself. Quote Link to post Share on other sites
jean Posted June 16, 2007 Report Share Posted June 16, 2007 Hey Goswell, even I can get you 5hp at the rear wheels....... without a rolling road..........free of charge Quote Link to post Share on other sites
jonlar Posted June 16, 2007 Report Share Posted June 16, 2007 Hi David, the relationship between the camshaft profile and MU cannot be over emphasised, but someone who knows what they're doing on a rolling road will be able to calibrate the MU to whatever spec. cam you've got. It is not really something for the DIYer to attempt - and you usually need an OK MU for service exchange - with correct seals for today's unleaded fuel, which will rot the leaded fuel type seals. Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.