Now what? - Fuel???
Discussion
So I've had issues getting the Wedge to run but things had gotten better. Weak top end but it started and drive reasonably OK. Until Sunday. Fueled up (super) then it drive normally across the street to the hardware store Came out 10 minutes later, it started immediately and headed home and then 'woop'.
Like a plugged was pulled. Wouldn't run above 3K, happier at 2K engine completely bogged, more/less throttle made no difference. Guessing over-fueling? Wife said is was smoking a bit as I pulled in the drive but I didn't notice/see it so not a fog. Engine is running at idle OK (to the ear). No cats to plug (but that is what it felt like.)
Too aggravated Sunday to play mechanic but ideas? Thanks Grady
Like a plugged was pulled. Wouldn't run above 3K, happier at 2K engine completely bogged, more/less throttle made no difference. Guessing over-fueling? Wife said is was smoking a bit as I pulled in the drive but I didn't notice/see it so not a fog. Engine is running at idle OK (to the ear). No cats to plug (but that is what it felt like.)
Too aggravated Sunday to play mechanic but ideas? Thanks Grady
I'm guessing it's a 280i running K Jetronic (also called CIS). If so then these are very sensitive to dirt in the fuel system & fuel pressure as the whole system operation depends on having the correct line & control pressure to function correctky.
Clearly obvious faults such as air leaks in the intake pipework will cause issues as will mechanical problems such as the air metering plate within the fuel distributir binding / sticking.
It is worth checking everything through methodically. Check for air leaks on the intake pipework, check for full travel of the metering flap, check for obstructions / collapsed pipes on the intake side.
Being able to check fuel pressure will tell you a lot. Cars which have been stood tend to end up with rust/vsnish/gunk in the tank which will very rapidly plug filters, wear pumps & if you're really unlucky block metering heads, injectors & warm up regulators. Adding modern high ethanol content fuel into the equstion just makes things worse as it not only acts as a very effective cleaning agent for the fuel system but is also highly likely to attack any rubber parts will will deteriorate & add to the misery! The good news is that all of these conditions can be diagnosed by checking main system pressure & control line pressure plus using a big of common sense. A gauge kit is a worthy investment fir a K Jet owner - it's the mechanical equivalent of an OBD code reader!
Cheers Stew
Clearly obvious faults such as air leaks in the intake pipework will cause issues as will mechanical problems such as the air metering plate within the fuel distributir binding / sticking.
It is worth checking everything through methodically. Check for air leaks on the intake pipework, check for full travel of the metering flap, check for obstructions / collapsed pipes on the intake side.
Being able to check fuel pressure will tell you a lot. Cars which have been stood tend to end up with rust/vsnish/gunk in the tank which will very rapidly plug filters, wear pumps & if you're really unlucky block metering heads, injectors & warm up regulators. Adding modern high ethanol content fuel into the equstion just makes things worse as it not only acts as a very effective cleaning agent for the fuel system but is also highly likely to attack any rubber parts will will deteriorate & add to the misery! The good news is that all of these conditions can be diagnosed by checking main system pressure & control line pressure plus using a big of common sense. A gauge kit is a worthy investment fir a K Jet owner - it's the mechanical equivalent of an OBD code reader!
Cheers Stew
Edited by StewB_v6 on Thursday 2nd May 07:24
Hi Grady
Thats a bummer...As Stew said the cologne is fuel sensitive and the fact that it started okay seems to point to fuel..check for leaks in the air system and if she starts remove the oil filler cap and place your palm over the oil filler neck, blip the throttle via the throttle body...if your hand gets sucked to it then the inlet manifold is leaking, the distributor is a common area due to the gasket design.
Hopefully you have not destroyed some hose with the super...95ron is fine with the occasional additive lead replacement...do you have an accumulator fitted, if it has an air breather on the back of the unit then cap off the feed from it to the engine, remove the pipe from the back of the accumulator and then remove the plug on the metering unit, turn key to position 1. for a couple of seconds, if fuel comes out of the rear of the accumulator then there is your problem....although im sure this would hinder starting if it were faulty.
Hope you sort it...I know all about V6 headaches...
Ziga
Thats a bummer...As Stew said the cologne is fuel sensitive and the fact that it started okay seems to point to fuel..check for leaks in the air system and if she starts remove the oil filler cap and place your palm over the oil filler neck, blip the throttle via the throttle body...if your hand gets sucked to it then the inlet manifold is leaking, the distributor is a common area due to the gasket design.
Hopefully you have not destroyed some hose with the super...95ron is fine with the occasional additive lead replacement...do you have an accumulator fitted, if it has an air breather on the back of the unit then cap off the feed from it to the engine, remove the pipe from the back of the accumulator and then remove the plug on the metering unit, turn key to position 1. for a couple of seconds, if fuel comes out of the rear of the accumulator then there is your problem....although im sure this would hinder starting if it were faulty.
Hope you sort it...I know all about V6 headaches...
Ziga
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