My ford ranger makes a knocking sound when I start it and every so often while driving. If it sits, it loses power and neerly shuts off. Also, it almost has no power when going up hills. A diagnostic test supposidly did not show anything and the same mechanic tried to sell me a new engine for $4000.
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Started knocking and shut off ? Now will not start?
That sounds bad - check fluids - engine oil and coolant - those three symptoms can indicate overheating (either by lack of coolant or engine oil).
Did either fluid get low AND does the engine oil look contaminated - milky colored and way overful.
Not Start? Does it turn the engine and just not fire up running?
Or does the engine not turn over at all?
If the engine is siezed - you can tell by the electrical power needed to crank the engine - turn on the lights and try to crank the engine - if all you hear from the starter is a click and all the lights dim - that means a lot of power is needed like:
1. the battery doesn't have enough power - jump start to verify
2. or it requires more power to turn the engine than the battery can provide - engine siezed - try turning the engine by hand with socket/wrench to verify.
I hope your engine is not siezed - if so - hope you still have warranty coverage on the powertrain.
Please let me know what you find and if this helps?
A lifter problem can only be fixed by changing the lifter. You might as well change all of them because it is just as easy since you have already had to take the heads off to get at the noisy lifter. While you are at it, get the heads reconditioned or a valve job. More than likely the oil was not changed as often as it should have been. Dirty oil works like sand paper on the valve stems.
The knocking (as opposed to pinging) could indicate lack of oil or a bad oil pump. If it was the lack of oil then that, in turn, could cause overheating and a subsequent blown radiator hose. In addition, depending on how long you ran the engiine while it was knocking, you could have driven off a pistion rod cap while the pistion seized up in the cylinder. If the engine won't crank or cranks with some undesirable metal on metal noise you may have an engine job (or a new short block)in your future. My arm wave analysis may be modified by some additional information.
If the truck was ran low on fluid to the point it clangs and bangs, the internal damage is done.
The best you can hope for is burnt bearings and hopefully the shafts are not scored. Disassembly is the only solution. Or a used transmission.
You could be low on oil or the sending unit could be bad or a few other things. Lets take it one step at a time. First change the oil and filter.Recheck. Also does engine make any knocking or rattling sounds. After you do these checks leave a comment of the results and I will get back with you on the next steps depending on results.
checkout your oil pump and your camshaft bearing and get on this website to see if they have your truck listed its www.autozone.com and you maybe able to checkout pictures and diagrams showing you how to repair your truck and checkout prices at the same time and i hope this help you out michigan man
you got head gasket problems, white smoke is an indication of water turning to steam, probably doing uphill because the engine is under greater load.i think the knocking is pre ignition, carry out an engine compression test to verify your head gaskets integrity