Hey,
I have a TF magna automatic and i was hoping somebody might know something about either of these problem or knows what it could be. :)

The first time i start the car for the day it sounds alright and i let it warm up a bit but when i put it into a drive gear it has this louder rhythmic sound that speeds up with the motors revs till about 1400 and it clears out. Once its been driven for a while the sound at low revs is a lot fainter. Think this happens with automatics, but seems a bit more than the usuall.
The other problem is also usually after first starting of the day when driving along it nearly feels like it misses once. seems to happen more up hills. Changes gears fine and when under higher revs also seems to be not as bad, more when crusing up a hill with lower revs. But once again dont notice it when been on the road after a while.

The car does have 287Km on it and ive only just got it so im not sure when, if ever ? it had its gearbox changed. Im hoping its not the gearbox about to go as i would like it to hold on a bit longer. Manual Conversion could be fun :)

Thanks for any help you guys have.
Jim.

From your description it sounds more like an ignition problem...maybe a plug bad or a lead as the rhythmic sound you describe is the same when you have a plug that is not firing - once the engine warms up and at higher revs the miss is less noticeable....not transmission related. Could also be a bad valve but do the easy most probable checks first which are plugs...leads...compression check.
Good Luck.

Ive got a hold of a compression tester and im curious weather or not its ok to do the checks with the intake manifold taken off, as their is no other way to access the sparkplugs underneath it. Also once thats off will i need a new gasket for the intake manifold and the throttle body when i go to replace them. Thanks. Jim.

Ive got a hold of a compression tester and im curious weather or not its ok to do the checks with the intake manifold taken off, as their is no other way to access the sparkplugs underneath it. Also once thats off will i need a new gasket for the intake manifold and the throttle body when i go to replace them. Thanks. Jim.

No. They're metal gaskets and can be reused.

Ok so ive done a wet and dry compression test on the front 3 cylinders while also replacing the spark plugs. Car does seem a little smoother but still noticeable skips sometimes, i would bet the back three need replacing aswell so i will get around to doing them later in the week between exams. These are the results from the front 3 tests and i will write back later in the week with the results of the back 3 tests.

CYL - 1 2 3
Dry - 204 208 204 (psi)
Wet - 225 225 228 (psi)

For a first time compression test i believe these results are good ?

They certainly look OK....very little variation. It's normal practice to have all the plugs removed when doing a compression check so they may even be slightly higher with all plugs removed allowing the starter to spin faster.

Been busy moving lately and starting a job, so havnt had much time to get on but after getting new ignition leads today and putting them in i was hoping it would solve the problem but unfortunately its not and i know its missing on the 4th and 6th cylinder. have done a wet and dry test on all cylinders with all plugs out and results were slightly higher up around the 120 mark but still all very similar and ok sounding. Have ruled out leads and spark plugs as the problem and fortunately my new landlord/neighbour is a car person and helped my do a test with hooking up a compressor to the cylinder to check for leaking while at TDC but couldnt find anything. So im going to check the fuel injectors over the weekend but was wondering if anyone has any other ideas ?
kind of weird that it is between two close cylinders that arnt firing yet couldn't find any leaks.
Thanks for your imput :) Jim