silvermazda

I have an 04 MTwith 40K, and it has a hard time starting most of the time. It will start fine first start of the day but the next time it will rollover and not start, sometimes after trying to get it started after about 5 minutes it will fire up, but it will start fine if I give it a little push and pop the clutch. I changed the plugs but that wasn't the problem. I need some help with what I should try next injectors or coils & wires, or any advice from someone who had similar problem. I don't think it's flooding because even when I put fresh plugs in it wouldn't start the first try I had to push start, And I had crank sensor replaced a few months ago

Silver06

Hey. Where to start (j/k)......

1). has it had the starter recall?
2). when's the last time you changed coils?
3). any codes?
4). have you gone through THIS TSB?

zoom44

have the battery tested. have the alternator tested. reset the e-shaft sensor (crank sensor) profile stored in the PCM memory with the 20 brake stomp routine

silvermazda

I talked to dealership and they said starter would not cause problem in this weather, but the coils are original so I might try replacing them and wires. Can any mechanic do the engine carbon removal to make sure those seals are working good, I always let my car warm up before shut-off so maybe they are leaking and causing it to flood.

Silver06

I don't want to lead you down the wrong path (easily done on the internet).

If the car starts with a bump, but not with the starter, I agree with Zoom44 to check the charging system/battery/cables, etc. Have the battery tested at an auto parts store under load. Clean and check all of the cables (battery top and at the starter) for corrosion & tightness. Time-wise, the battery is probably on the down-side of it's useful life.

While you're checking the cables at the starter-end, look at the part number of the starter. The TSB (not a recall, my bad) for checking for an upgraded starter is here . The point of the TSB was to increase the cranking speed for easier starting. This was done with an upgraded battery and possibly starter.

Coils and wires should also be checked carefully for evidence of arcing and wear. Generally, coil problems manifest themselves as either a noticible loss of power, or misfires at higher rpm when the engine is hot (I could be corrected on this, though), so I wouldn't change them first.

Once the above check out, then you can do the de-carb procedure. There are a couple of do-it-yourself threads. I think the fluid is about $25 from the dealer. (there is a lot of cranking required to do the procedure, so check the electrical system first).

Next, check compression;
Next, check fuel injectors for leaking; etc.; etc.; etc.