help!!! blue top cams

[FLAWLES]

i " we " have just put some blue top cams in my gtz
we have timed them spot on
we have spark
we have fuel
dignostics are a-o-k

but no start, it cranks over but no go

we thought it was a pressure increase in the intake manifold killing the car " due to my aftermarket ecu " but we diconected it and run it on the factory ecu and still no go?

someone help us or manily me

[trdfxgt]

with out knowing how much you know about timing and things could it be 180 degrees out ?

[FLAWLES]

with out knowing how much you know about timing and things could it be 180 degrees out ?

mmmmmmmmm i see

like i said the timming is spot on

[ee904age]

Whats it sound like when cranking? ie:good compression, trying to fire/not trying etc...

[FLAWLES]

Yea good compression
no vlves hitting " non interfearince engine remember "

we nearly got it firing once but just for a split second

[ee904age]

Well not being to clued up on the gze all I can say is check over all sensors etc that may have been touched in the process, but you have probably already done that.

[FLAWLES]

yea check

the map sensor doensnt need to be at a sertin height does it

[ATAl]

Have any fuses blown?

Are the injectors firing? (I know you said you've got fuel but that could just be at the line)

Cambelt tension correct - could be slipping?

[FLAWLES]

mmmmmm injectors have not check those you bring up a valid point..... az my fuel press reg gauge is jumping around the place az soon az we stop cranking the engine over


but yea cambelt tensoin sweet as are fuses

[Adamal]

If the cam belt were slipping, you'd definatly hear a difference.

Has putting the cams in been the only thing you've done to it since it was last running? Nothing else you've tampered with?

[Lloyd]

As with any problem with starting, first things to check are fuel and spark. Make sure you have those and go from there.

[Dr-X]

You have spark, you have fuel. Assuming all you've done is change the cam, there's only 2 possibilities - either your cam timing is out, or your dizzy is out 180deg. Triple check it.

[Lloyd]

Ummm..... if this is in a GTZ and its MAP sensored then you'd have a crank angle sensor instead of a distributor, correct?

[dohca]

Ummm..... if this is in a GTZ and its MAP sensored then you'd have a crank angle sensor instead of a distributor, correct?

yep

same with the dli AFM version

[vvega]

when you get sick of tring to sort it tow it over and ill sort it for you

hahha

v

[NZ_AE86]

You have spark, you have fuel. Assuming all you've done is change the cam, there's only 2 possibilities - either your cam timing is out, or your dizzy is out 180deg. Triple check it.

Could this be the the NEW DR-X???

I agree with him.

[vvega]

lol i know very impressed with the change around in info and practical advice
he is becomming dare i say it a asset to the toyspeed comunity :d

v

[Lloyd]

Are all the crank/cam angle sensors in the GTZs the same, geared onto the cam? As opposed to the likes of some distributors that have a set way they can go in and thats the only way.

If you've ever removing your CAS then mark it with the engine at TDC so you know where to put it back in. Been there and not done that before...

[ChaosAD]

FYI, if timing is 180 deg out the timing light wont show that as the crank turns twice for every one turn of the cam.

[FLAWLES]

when you get sick of tring to sort it tow it over and ill sort it for you

hahha

v

WILL DO I JUST NEED SOMETHING TO TOW IT WITH..........hold on we will came and get you my cars at thaphattys place

this will be easyer