rb problems

[nizmobeast]

im about to buy my guys rb20 swap 240sx and from what i heard and saw is that my guy bought it running crappy he said the guy he bougth the car from said it was running fine until he took the motor out and cleaned the engine bay then when he put it back in the motor ran like crap when your crusing when you slowly release the clutch the car would die out and you would have to start it again constantly . so he readjusted the timing and thought the problem was a bad ground and a couple of other things then he brought it his friend at nissan and he played with it. afterward he said the car was running pristine but when he got on the highway the car shut off and wouldnt start back up. when he tried to start it about a week ago it cranks but just doesnt wanna go.

Modified by nizmobeast at 5:47 PM 3/24/2008
Modified by nizmobeast at 5:47 PM 3/24/2008

[nizmobeast]

can anyone hit me up with somme info even a little?

[Carl H]

be more specific...what engine, what was checked/changed?you're asking very broad questions here.

[nizmobeast]

sorry rb20 he redid teh timing and thought it was bad grounding so he had the wires replaced and from their i revised the paragraph above.

[nizmobeast]

has anybody got anything

[mott6904]

You need to start work down the basic diagnostic chart. Does it have fuel pressure, injector pulse, spark, compression? still need to know more info before anyone can point you in any direction

[nizmobeast]

thank you ill go down the list and see what comes up

[240z4u]

Do you have fuel pressure? Could have a dead fuel pump or no power to the ecu/fuel pump.

Could be a million things man, but its probabaly something somewhat simple.

Find out from the nissan tech what he did when he "fixed" it and ask if he noticed anything else janky.

Evan

[nizmobeast]

i just recently checked the spark ont the rb20 and i wasnt getting spark from one of the cylinders so i decided to check 2-3 more of the cylinders and they do not have spark either so im guessing maybe the wiring or coil packs are messed up i doont know.
Modified by nizmobeast at 6:35 PM 4/13/2008

[nizmobeast]

does anyone have any idea as to what may be causing the engine not to produce spark

[DJButton]

does anyone have any idea as to what may be causing the engine not to produce spark

Um yeah, test the coilpacks and ignitor, we can't just sense what's wrong from here, do you have a test light, multimeter, something of the sort?

[nizmobeast]

yeah i do ill go and test them tommrow thanks

[lilskyline240]

if it started haveing problems after being pulled then put back in its could be a grounding problem. I had a weak ground between my Battery, Chassis and block and it caused me to not get spark or the injectors to fire

[240z4u]

Is it in a black S14? Just curious.

Evan