Okay... my battery went dead on my car . after i tried to turn it over a few times only to get a few revolutions of the crank i made this assuption... so my friend got his juper cables and we jumped my car... it started up with some hesitation but it started... ... it started rough and ideled rough for about 3 sec and the was fine but with a very bad tap coming from my valvetrain that was definitly not there before... i was pissed... i stook there in disbelief... i reved the engine modestly right from the thottle body and listened.. i didnt thik a dead battery would make a valve tap like hell... so anyway i drove about 10 miles home and by the time i got home the tap had gone away. now... i have a few ideas of what could have happened... the valve got seated wierd somehow because of trying to start it when the engine would barely turn... or it was knock from excess fuel burning off from when i was trying to start it... i dont know if it was a knock because i dont know what that sounds like and it sounded much like a laud lifter or something of that nature... it sounded like a pen tapping on a piece of wood... is anyone has any input on this it would be greatly appreciated. should i be concerned about this... and what exactly was that noise... i have a 92' Lumina 3.1 with 73,000 miles on it. Thank you.
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Clicking Valvetrain
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RE: Clicking Valvetrain
Update on the battery situation. i tried charging it today... but my efforts were fruitless... the battery only held the charge for a few hours. so on monday i will be making a trip the deka plant a few miles away and seeing if they have a battery for me. i took a trip with it after i let it sit for a few hours and i barley got it started... on another note there was no laud tapping coming from my valvetrain.... but im still curious about what that could have been.91\' Mazda miata.
92\' Lumina (sold)
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piston slap?... i dont know what that is... it never came back... it was only that one time... and yeah it was clicking at about half the engine speed. on another note i got the battery in and it runs great... because you all know how easy it is to get to the battery in a W body it only took me about 5 min to change it.91\' Mazda miata.
92\' Lumina (sold)
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Piston slap refers to the point at which the piston is being pulled up (to much vac) on it way down, or pushed just before coming around to go back up, piston slap is more of a timing issue, somewhat worn pins and rod bearings.
It is possible for a piston to make noise if it is not timed right to the valve trainI am back
Mechanical/Service Technican
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my mechanic swears that my lifter problem will go away when i run the GM top end engine cleaner through a couple times. he claims that the cleaner will free the lifter. he's a really good mechanic that works at a GM dealership, and swears that he has seen it work before, but i still have my doubts about that fixing the problem."But existing is basically all I do!"
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