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Tech Area => General Buick Tech => Topic started by: vl1500 on August 06 2017, 11:36:02 PM

Title: Ticking noise only while driving.
Post by: vl1500 on August 06 2017, 11:36:02 PM
Can a leaking intake/gasket make a ticking sound while under load? Thanks...
Title: Re: Ticking noise only while driving.
Post by: Scoobum on August 06 2017, 11:43:57 PM
I'd lean toward an exhaust leak.
Title: Re: Ticking noise only while driving.
Post by: vl1500 on August 07 2017, 12:02:42 AM
I have installed TAPerformance headers and crossover pipe, I have a Hooker Catback Exhaust with Aerochamber mufflers. I have replaced about everything that I could think of. The noise only happens while driving, If I do not touch the gas and let it idle down the road no noise but if I touch the throttle the ticking starts. I can slide it in neutral while driving and not letting off the gas noise stops. Sorry for the long post.
Title: Re: Ticking noise only while driving.
Post by: reality on August 07 2017, 12:33:36 AM
U-joint?
Title: Re: Ticking noise only while driving.
Post by: vl1500 on August 07 2017, 04:14:45 AM
Both were replaced.
Title: Re: Ticking noise only while driving.
Post by: TexasT on August 07 2017, 07:25:24 AM
Flexplate might have a crack in it.
Title: Re: Ticking noise only while driving.
Post by: Scoobum on August 07 2017, 08:12:36 AM
Slide under it and check the flex plate as Rich mentioned. I had a 77 Nova in another lifetime that would crack them regularly. TA's can leak like a whore as well.
Title: Re: Ticking noise only while driving.
Post by: Forzfed on August 07 2017, 11:11:02 AM
Can a leaking intake/gasket make a ticking sound while under load? Thanks...

Did it start right after the new header install?  Do you have a vacuum gauge or do you notice that your boost isn't as high?
Title: Re: Ticking noise only while driving.
Post by: vl1500 on August 07 2017, 02:48:09 PM
Thanks for the response guys.... I'm working nites so I'm just waking up. I have a new flex plate and yes it made the noise before the header install. A little history.... I rebuilt the front end and engine several years ago. I'm running the stock pistons, rods, and crank. I had the block line honed so that I can install ARP main studs. I installed a 204/214 elderbrock cam kit and double roller timing set. I broke the engine in using Lucus brake in oil, the engine has 80psi oil pressure @ start up, 50-60 psi while driving and 20-23 psi hot @ idle. I have a Terry Houston Down Pipe and a Hooker Catback exhaust with Aerochamber Mufflers... Here's the strange part.....I do not hearthe noise @ idle or reving the motor in park, reverse or neutral, if I foot brake it and build boost the metallic ticking starts sometimes not everytime. If I place jack stands under the rear axles and apply the emergency brake and press the brake petal tring to build boost it will not make the noise. The noise only starts when driving and the rpm's are between 1200 and up and it sort of follows the engine rpm but it is not steady. Once the noise starts if I slide it in neutral while keeping the the rpm's the same the noise will stop,put it back in drive and it comes back. I have since replaced the cam with an Erson 208/208 flat tappet with Johnson lifters with the same results. Sorry for the long post!!
Title: Re: Ticking noise only while driving.
Post by: vl1500 on August 07 2017, 03:09:31 PM
I do have a boost/vacuum gauge and the vacuum is steady between 15-16 @ idle. Thanks...
Title: Re: Ticking noise only while driving.
Post by: Scoobum on August 07 2017, 06:01:25 PM
Check to see if the driveshaft has been hitting one of the mufflers. Had it happen with my ATR exhaust. Knock sensor was spinning in circles when I laid into it. We had a car come in a couple years back with a mysterious metallic sound. Ended up being a broken cam nose spring.
Title: Re: Ticking noise only while driving.
Post by: vl1500 on August 07 2017, 06:56:39 PM
I plan to tear it down in a couple of day to inspect the cam button and spring, but what is hard to understand is why won't it make the noise while the rear end is raised??
Title: Re: Ticking noise only while driving.
Post by: nocooler on August 07 2017, 07:00:45 PM
Converter bolts tight?
Title: Re: Ticking noise only while driving.
Post by: vl1500 on August 07 2017, 07:08:06 PM
Yes... I have a ProTorque convertor that I purched from Eric Sheritz when he rebuilt my transmission years ago
 The car has never been ran hard or to a track. I swapped out my converter with a low mile stock D5 converter and the noise was still there therefore I swapped them back. Could a front pump cause this noise? Rotor vanes maybe?
Title: Re: Ticking noise only while driving.
Post by: Scoobum on August 07 2017, 07:42:06 PM
Tried unbolting the convertor?
Title: Re: Ticking noise only while driving.
Post by: vl1500 on August 07 2017, 08:21:28 PM
No I have not tried that but the noise only happens while moving with throttle applied or when foot brakeing.
Title: Re: Ticking noise only while driving.
Post by: 278CIKILLER on August 07 2017, 08:52:47 PM
Take a piece of hose 2 feet long and hold it to your ear, and rest the other end around the intake and vale covers and touch the throttle a few times, if the noise get's louder you'll hear it, then you know it's in the valve train.
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