Suzuki G16A loosing grunt

Ive got a '94 1600 16v auto suzuki, fuckin thing in the last couple of weeks as been getting more sluggish by the day. Its worst when cold and trying to accelerate its just got nothing there, I kept thinking it was the aircon but thats turned off. had a look under the bonnet tonight its got a very slight rattle at idle and you could say that the pully on the crank is not running true, it has a slight wobble maybe like 1mm.

Not long had a service, ATF is up to level and still red.

Any idea would be greatly appreciated, cheers.

They have a double skinned exhaust front pipe that collapses internally blocking the exhaust. Makes it feel strangled when driving.
When too much pressure the manifold cracks.
Remove, throw away and fit extractors.

There has also been a few that have had the front pulley slog out.
Any chance you have had the timing belt replaced recently or in recent past?

Good chance it's the exhaust manifold as Cambo says.

Ive had her 12 months now, she had a new head and timing belt then and I put the extractors on not long after I got it, she performs fine over the rest of the range as far as I can tell its just taking off from a standing start

Could be a large number of things. Sounds like you've had the worst bits changed already.
Maybe a faulting sensor? Or throttle body needing cleaned out?
Need to be checked if any DTC's in system, some faults not necessarily bring on check light.

Check basics, Spark plugs, HT leads, air filter, compression, timing etc. then go from there.

The front pulley flogged the keyway out of the crank on mine, made it real slow to get moving.
Once she was going, it was great.

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Originally Posted by Gerbs

The front pulley flogged the keyway out of the crank on mine, made it real slow to get moving.
Once she was going, it was great.

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How did you go about fixing that? does the crank need to come out for machining?

Not an easy fix for that.
To do it properly it means replacing crank, or removing it and getting it welded/filled and machined back to size.
Or the cheap dodgy way, is use metal bond type filler, put it together, and sell it straight away.

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Originally Posted by cambo

Not an easy fix for that.
To do it properly it means replacing crank, or removing it and getting it welded/filled and machined back to size.
Or the cheap dodgy way, is use metal bond type filler, put it together, and sell it straight away.

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Just loosened my belts off and yip sure enough I cant get just enough flex by hand to notice it. Fuck it, had to happen right before Im due to go for the hunt of my year grrrrrr:yuush:

Tack weld the barstard on!

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Originally Posted by veitnamcam

Tack weld the barstard on!

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It did cross my mind:o

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Originally Posted by veitnamcam

Tack weld the barstard on!

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Not a silly idea, not a lot to lose.

Im more going down the knead it/locktight a new pulley on, just been doing some research any Idea how long it would take to wop it all off, put it back together and reset the timing?

I did the dodgy cheap thing, filled it with the best metal quickset putty stuff I could find, and filed it to suit.
Worked well for about 6 weeks of hard thrashing, then started to slip back to what it was doing.

Thought about welding - but the crank itself is heat treated, welds might not stick properly?

Quote:

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Originally Posted by Gerbs

I did the dodgy cheap thing, filled it with the best metal quickset putty stuff I could find, and filed it to suit.
Worked well for about 6 weeks of hard thrashing, then started to slip back to what it was doing.

Thought about welding - but the crank itself is heat treated, welds might not stick properly?

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Did you use a new pulley or just the old one?

are you sure that's what has made it loose power is it making a knocking noise when the engine is running if its just a little bit of play crank the bolt up it should get you by ask around the engine reconditioners theres one in auk that can do them in place

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Originally Posted by northdude

are you sure that's what has made it loose power is it making a knocking noise when the engine is running if its just a little bit of play crank the bolt up it should get you by ask around the engine reconditioners theres one in auk that can do them in place

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Yea there is a slight knock, I took it to the mechanic the other day he says its not the worst hes seen and is very confident he can get a reliable repair with a new pully and some hard out filler shit.

ok I cant see how the pulley being loose would make it loose power without seeing the car id say it sounds more like a vacume leak or possibly the part in the air flow meter that moves could be sticking

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Originally Posted by northdude

ok I cant see how the pulley being loose would make it loose power without seeing the car id say it sounds more like a vacume leak or possibly the part in the air flow meter that moves could be sticking

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The crank pulley also has the timing belt running on it, behind the fan belt - has the effect of retarding the timing when you put your foot down :)

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Originally Posted by big_foot

Im more going down the knead it/locktight a new pulley on, just been doing some research any Idea how long it would take to wop it all off, put it back together and reset the timing?

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Use devcon 10110 bedding compound

It will never ever ever ever come loose again :)

Isn't the crank pully and cam belt drive pully 2 separate pieces

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Originally Posted by northdude

Isn't the crank pully and cam belt drive pully 2 separate pieces

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Yes, but both driven off the same key in many instances

I've had a similar problem with the crank pulley, ended up using a speedy sleeve, setting it place and drilling and trapping 2 holes and using grub screws to lock it into the correct position with a heap of lock tight

Got us out of trouble [emoji106]

Was it just the bolt backing off and causing the pulley to wear the key - for those of you that had the issue?
I'm keen to stop this happening on my Vitara, especially if there is some preventative medicine!!!!

cheers
@

Just make sure the crank bolt is tight a couple of mms of play won't make that much difference

Sweet - will add that to the list of things to check next time I get a spare minute in the garage!

@

A little bit if locktite doesn't hurt either use the stuff you can undo again

I have done some "spray welding" on cranks (many years ago) as a repair, worked fine, if it was the big end, not so much.