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Old 01-05-2019, 04:24 PM   #1
GeneralBurrito
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Default Are injectors on the 240 just naturally loud?

Both before and after doing my b cam swap (only barely needed to adjust a couple valves), replacing the entire exhaust from the manifold back, and changing to 850 yellow injectors, I still have a tick when I accelerate. I think it might be injectors since it goes silent during deceleration, which could probably be fuel cut off.
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Old 01-11-2019, 04:58 PM   #2
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Unless there is some other engine issue creating a louder noise. I can always hear that clicking sound of the injectors.

Maybe they have injectors designed to be quiet on higher end cars like a big benz or lexus?
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Old 01-11-2019, 05:58 PM   #3
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Personally, I don't think that its the injectors.

Given the number of miles that most of our engines have, its likely piston slap.
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Old 01-11-2019, 06:23 PM   #4
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A ticking noise on acceleration can be exhaust leak at the cylinder head to exhaust manifold gaskets.
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Old 01-11-2019, 11:37 PM   #5
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Quote:
Originally Posted by ZVOLV View Post
A ticking noise on acceleration can be exhaust leak at the cylinder head to exhaust manifold gaskets.
I thought it would be exhaust leak, but I replaced every exhaust part and gasket other than the manifold itself. There might be a chance that it could have a crack, but I've had a shop I worked in check for a leak and said nothing about the manifold.
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Old 01-11-2019, 11:42 PM   #6
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Do 240s have a fuel cut off though, because it only ticks when I get on the pedal. The second I pull off the pedal, it goes away immediately. Even like a slight push and it's faint, loudest at heavy load.
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Old 01-14-2019, 11:42 AM   #7
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Pistons are noisy when loaded.

Injectors are not heard over all else happening under the hood.

Injectors in your Volvo are quiet compared with Direct Injection injectors in modern anything. Manufacturers make up fancy moulded insulation things + plastic covers to seal the noise in.
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Old 01-14-2019, 01:10 PM   #8
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Maybe you need a valve adjustment
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Old 01-14-2019, 01:46 PM   #9
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I'll look into possibly getting another valve adjustment when j change my oil.
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Old 01-14-2019, 05:53 PM   #10
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I have these Bosch/Ford Motorsport 39lb things in my car and they are LOUD. I don't know if that is correct, But it doesn't seem to effect much.
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Old 01-14-2019, 10:46 PM   #11
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Quote:
Originally Posted by GeneralBurrito View Post
I replaced every exhaust part and gasket other than the manifold itself.
Quote:
Originally Posted by GeneralBurrito View Post
it only ticks when I get on the pedal. The second I pull off the pedal, it goes away immediately
Quote:
Originally Posted by ZVOLV
A ticking noise on acceleration can be exhaust leak at the cylinder head to exhaust manifold gaskets.
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Old 01-15-2019, 12:04 AM   #12
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Quote:
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.
I also replaced the gasket between the manifold and head a couple months ago, but thanks for the input.

Last edited by GeneralBurrito; 01-15-2019 at 12:31 AM..
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Old 01-15-2019, 10:18 PM   #13
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Quote:
Originally Posted by GeneralBurrito View Post
other than the manifold itself
Misread that as "manifold gasket". Like others, I am still skeptical of the loud injector theory.
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Old 01-16-2019, 12:34 AM   #14
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Quote:
Originally Posted by Harry Tuttle View Post
Misread that as "manifold gasket". Like others, I am still skeptical of the loud injector theory.
I already did a valve lash adjustment, but I'll ask my guy if I need another one or if he can check for a leak on the manifold itself.
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