Car engine jerky when accelerating?

Question

When I accelerate (especially noticable from stand still or corners) my engine 'chokes(?)' ie splutters and it feels like it misses a beat every now and then and my car jerks about. It's not noticeable when i have some momentum and traveling at a constant speed.

I noticed some fluid leaking recently, the mechanic said it was engine coolant fluid, so they replaced my rocket cover gasket. apart from the leak it was running good before.

Could it be a dodgy part or dodgy fitting that has done it?

I took it back already once, and they reckoned water had got into it so they dried out some pipes. (they told me i needed my engine cleaned too..... :s)

I have a mazda astina 4 cylinder 1.8L manual

Answer 1

I think if I were you I would find another mechanic. The ROCKER cover gasket has no connection with the coolant, this would be the head gasket.
Poor acceleration is because the engine timing is wrong i.e. the ignition is early or late. The fuel mixture is wrong due to engine management problems or dirty filter, (air or fuel), The ignition system has a fault or there is a mechanical problem such as loss of compression from wear or damage.
These diagnoses are not exhaustive as there can be many little things causing the problem.
Your mechanics seem to be misinforming you or you are not understanding them.
I would definitely find another mechanic and get a second opinion and some clear advice.
This is not something you can get diagnosed over the internet.
One bit of advice, DO NOTHING YOURSELF. Not because I doubt your skills but because if the work has been done badly by the first mechanic you may have a claim against them for poor workmanship and if you interfere you will have invalidated any claim against them to put it right.

Answer 2

It could be a lot of things. The stuttering is probably being caused by a misfire in one or more of your cylinders. The coolant leak could be from a blown head gasket. It really depends on where the coolant is leaking from, could be as easy as a loose clamp.

Try purchasing a new set of spark plugs, spark plug wires and a new distributor cap. Install those items and see if you still have that sputtering problem. If you do then it could be a vacuum issue but I'm leaning more towards just a ignition tune up.

Answer 3

If it ran fine prior to your mechanic working on it, he may have forgot to plug something back in or it is just loose . First I would get another mechanic . the rocker cover gasket has no connection to a coolant leak. Check your plug wires at each end for a good connection. There is a possibility that it could be the Throttle Position Sensor is faulty . There are many things that can cause the problems you are describing.

Answer 4

this is going to on condition that it is an computerized and that is through the very actuality an motorized vehicle has a transmission which enables play between the engine's crankshaft and the tires on the line. Manuals will for the significant area would have the engine capacity straight away concerning to the wheels. So in case you left a handbook in kit and enable it coast downhill the engine's rpm would upward push on the project of the pull of gravity on the motorized vehicle because it is going to boost the cost.

Answer 5

A guess would be that you have a secondary ignition problem. A coil, a spark plug wire or boot, or a cracked spark plug. All of these things need to be examined very closely to see a failure. Or you could replace all of it to see if that takes care of the problem. That of course starts to get expensive.
These are only guesses based on your description. There are numerous other things that could be the cause.
Good luck with your problem.

Answer 6

Go back to that mechanic, and have him check his work, it sounds like he migth have left something unplugged or loose good luck

Answer 7

Have you tried a sparkplugs ??? try to change them it helped me !