slight shudder on throttle?

[junoki]

hey gents,

bit of help! today i noticed a slight shudder with my car when excellerating, im curious - never had any probz before

my eg wif jdm b16a doesnt hav any leaks or cracks anywhere, nuthin wrong wif chassis or suspension as well - the cars straight and true, gearbox also perfect as well as clutch

anyone wif opinion or advice as to wats wrong?

also anyone wif reccomendation on mechanic in vic?

i heard motorware, and whileward are good any other mechs

cheers

[vinnY]

on acceleration only? does it stop when no throttle is applied?
my guess is busted inner cv joint or unbalanced wheels

[markoJEK1]

How hard are you accellerating ? If hard enough you might be experiancing axle tramp - common on FWD's.

[junoki]

"on acceleration only? does it stop when no throttle is applied?
my guess is busted inner cv joint or unbalanced wheels "

- yes on execellerating , it stops when no throttle is applied -

" How hard are you accellerating ? If hard enough you might be experiancing axle tramp - common on FWD's. "

- not hard at all, normal excellerating to about 3->4k rpm then shift to next gear -

*thing is i only experience it sumtimes maybe 2 out of 5 times i hop into the car, never had the prob before, it only started yesterday.

thanks guyz for directions in solving this puzzle

[mickc]

How does the engine idle? Sounds like it may be misfiring. Could also be clutch shudder. Does it do it hot? Cold?

[geeang]

I'd check my engine/torque mounts as well to be on the safe side.

[02gzm]

Check the voltage is set correctly in your TPS while your at it. If it's off it may cause your car to under/over fuel as it's reading the throttle plate in wrong position.

[paps02]

my magna did this when the clutch was on the way out. really bad on cold mornings but once it heated up was fine. might be ur clutch mate.

[junoki]

clutch is fine - new heavy duty clutch put in 2000kms ago - idling cold in the mornings and arvo normal - nothing erratic, but i have noticed a very small leak in the front right shock at the top...... maybe thats the case???? HrmmM

ill keep u folks posted after i check voltage and torque mounts as suggested by geeang &02gzm


thanks everyone for the input - very much appreciated !

[dumped echo]

Most common is busted engine mount or problem with the drive shafts.

[junoki]

alrighty gents,

ive found the prob,

there was a slight crack in the ignition lead casing near the part it plugs into the distributor cap! and the sh*t was sparking onto my intake pipe..... thus causing erratticccc throttle....

[vinnY]

glad to see you found the problem
might have to check mine out, seem to be having similar problems around the 2-4krpm range

[beeza]

Interesting.Thanks for sharing!

[Riviera]

yea good find :thumbsup: