captainmarty Posted February 25, 2007 Share Posted February 25, 2007 hey, so lately when ever i turn off tina, it doesnt die straight away, it still splutters and turns over a couple of times... whats going here? prolly another simple one since my engine competence is hell low -but any ways... oh yeah and what does tractability mean? chur. Quote Link to comment Share on other sites More sharing options...
Gaz Posted February 25, 2007 Share Posted February 25, 2007 The pintos do that alot. Can be cause of two reasons usually. One the engine is getting to hot and itll cause it to 'run on'. Or cause the timing is a bit to advanced. Try retarding it. Turn dizzy slightly clockwise. Doesnt mean the engines stuffed tho. Tractability is what is usually refered to the lower end of a cars cam/rev range. If that makes sense. I.e Itll have shit tractability if the cam is aftermarket.. its that bit with cams/cam that lags untill the power comes on. Tractability usually gets worse as you go to larger cams. Fuck that makes no sense but yuh. Quote Link to comment Share on other sites More sharing options...
mark105 Posted February 25, 2007 Share Posted February 25, 2007 Tractability is what is usually refered to the lower end of a cars cam/rev range. If that makes sense. I.e Itll have shit tractability if the cam is aftermarket.. its that bit with cams/cam that lags untill the power comes on. Tractability usually gets worse as you go to larger cams. Fuck that makes no sense but yuh. makes sense to me Quote Link to comment Share on other sites More sharing options...
CaMpylobacter Posted February 25, 2007 Share Posted February 25, 2007 also makes reference to the overall driveability of an engine across the rev range. a vry tractable engine will pull at almost any revs, for example, race engines are often not very tractable if not "on cam"/in the powerband, and this powerband is often only at the height of it's efficiency within a couple of thousand rpm Quote Link to comment Share on other sites More sharing options...
Gaz Posted February 25, 2007 Share Posted February 25, 2007 ^^ way better right thur. Got some mint england up thur. Quote Link to comment Share on other sites More sharing options...
mikuni Posted February 25, 2007 Share Posted February 25, 2007 Nah, he just wanted to say "on CaM" My car sounds like its got tractorability.. ah ha ha.. yeah that was shit. Quote Link to comment Share on other sites More sharing options...
Ogre Posted February 25, 2007 Share Posted February 25, 2007 incorrect valve clearance can do that too. Quote Link to comment Share on other sites More sharing options...
captainmarty Posted February 25, 2007 Author Share Posted February 25, 2007 hmm, my dizzy was off a couple of months ago... chur Quote Link to comment Share on other sites More sharing options...
peteretep Posted February 25, 2007 Share Posted February 25, 2007 isnt it something to do with carbon in the engine burning on after its turned off because its so hot? Quote Link to comment Share on other sites More sharing options...
fuel Posted February 25, 2007 Share Posted February 25, 2007 Yeah if there are alot of carbon deposits in the combustion chamber they can cause hot spots and cause the engine to run on as the hot spots will continue to ignite the air/fuel mix after ignition is cut. Too hotter spark plugs can do the same thing too. Quote Link to comment Share on other sites More sharing options...
captainmarty Posted February 25, 2007 Author Share Posted February 25, 2007 so the 'run on' isnt causing any damage? Quote Link to comment Share on other sites More sharing options...
DavidTheCreator Posted February 26, 2007 Share Posted February 26, 2007 i might sound like a newb here but couldnt it be the starter motor, as my esky done that and then i had the starter motor recond and it stoped doing that, the bushes where just to worn Quote Link to comment Share on other sites More sharing options...
peteretep Posted February 26, 2007 Share Posted February 26, 2007 nah the carbon thing wouldnt cause damage I think, means your engine is probably not quite tuned right or getting time to refreshen it Quote Link to comment Share on other sites More sharing options...
Chrome_GT Posted February 26, 2007 Share Posted February 26, 2007 I'm pretty sure that's a symptom related to preignition. Basically your engine is running hot. The 'preiginition'is a term used to describe when the fuel/air mixture is ignited by something other than the spark plug. These can be carbon deposits or localised hot spots such as sharp edges on exhaust valves. These alternative ignition sources are continuing to ignite the fuel/air mix after you've turned off the ignition. Causing Run-ON So yeah, your engine is running too hot. To fix this 1) advance your timing, not retard it. It's probably too retarded which is causing the gases to complete the burning process later than normal so they are heating the exhaust valve too much on there way out. 2) colder plugs, I had the same problem because i had put hotter plugs in. I have since returned to colder plugs and advanced timing a little. 3) Richen fuel mixture. If your engine is running lean then the burn temp is higher. Running richer cools the burn process as the extra fuel absorbs heat energy as it vapourises. Useless info - ideal fuel/o2 mix gives most efficient burn, lean gives most economical burn, rich gives most powerful burn. Preiginition can also cause ignition to occur prior to spark plug ignition. This causes detonation because the extra iginition source leads to two flame fronts (pressure waves) buring across the cylindar, as they come close to meeting they cause unburnt vapour to explode due to a localised pressure rise (detonation). note detonation is also often caused by overadvanced ignition timing or low octane fuel in high compression engines. Shit that hurt. If I'm wrong tell me. Quote Link to comment Share on other sites More sharing options...
danger Posted February 26, 2007 Share Posted February 26, 2007 Had escorts that do this, one escort came equipped with an "anti dieseling solenoid" Basicly just a valve type thing into the carb to release pressure when you kill it and stop it running on and choking itself. Quote Link to comment Share on other sites More sharing options...
captainmarty Posted March 4, 2007 Author Share Posted March 4, 2007 hey thanks Chrome_GT, i had a play with the mixture and so far it seems to have stopped - Quote Link to comment Share on other sites More sharing options...
Chrome_GT Posted March 4, 2007 Share Posted March 4, 2007 Good to hear. Hopefully you'll be getting a little extra power too. I guess that if your running lean then chances are you'd get preiginition no matter what timing and plug heats you use. Man i wish oldschool cars like ours had manifold EGT and oxy sensors, ECU's etc.We'd be able to sort all sorts of running issues out. Quote Link to comment Share on other sites More sharing options...
anglebox64 Posted March 7, 2007 Share Posted March 7, 2007 if it keeps on running it is bad for your motor as it can make it run backwards and will dry the bearings out which will cause unnessasery wear on big ends and mains which will in the long run cause bearing knock then buy buy motor so best to ceck carb mixture and dial in your cam if its got a lumping one good luck any ways mate go the ford105e ANGLIAs Quote Link to comment Share on other sites More sharing options...
mikuni Posted March 7, 2007 Share Posted March 7, 2007 Everyone knows the easy way to fix an over running car.. jeeze. Put it in gear as you turn it off. Motor never has a chance to go backwards Problem solved. Quote Link to comment Share on other sites More sharing options...
Gaz Posted March 7, 2007 Share Posted March 7, 2007 Everyone knows the easy way to fix an over running car.. jeeze. Put it in gear as you turn it off. Used to do every time I stopped Quote Link to comment Share on other sites More sharing options...
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