'94 302 tick under load
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'94 302 tick under load
Hello all, this is my first post here in the forums and it seems like this is the best place on the net to find an answer to my question...
My '94 E150 Conversion van has develops a ticking sound under load. I know it's not timing issue, the tick or clicking is "softer" and much faster. The best way to describe it... it sounds alot like the moment you turn on a coffee bean grinder full of beans. 90% of the time it occurrs when climbing a hill while trying to maintain 70-75 mph and it is often harmonic until I slightly lift or press harder on the accellerator. It seems louder on the passenger side (But that could just be the wife complaining)
I've read in other posts that it is most likely related to the fuel injectors since it is so easily changed by accellerator pressure, but I've also read that it could be some air injection sensor mounted on the firewall (Though I haven't verified the location of mine yet), or even exhaust. This one has 113k on it, and my old man has told me these engines are notoriously noisy at age, is this why?
Any thoughts?
My '94 E150 Conversion van has develops a ticking sound under load. I know it's not timing issue, the tick or clicking is "softer" and much faster. The best way to describe it... it sounds alot like the moment you turn on a coffee bean grinder full of beans. 90% of the time it occurrs when climbing a hill while trying to maintain 70-75 mph and it is often harmonic until I slightly lift or press harder on the accellerator. It seems louder on the passenger side (But that could just be the wife complaining)
I've read in other posts that it is most likely related to the fuel injectors since it is so easily changed by accellerator pressure, but I've also read that it could be some air injection sensor mounted on the firewall (Though I haven't verified the location of mine yet), or even exhaust. This one has 113k on it, and my old man has told me these engines are notoriously noisy at age, is this why?
Any thoughts?
Tuned
Joined: Jun 2003
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probably an exhaust leak due to a rusted thermactor pipe (between both heads on back of engine), or cracked exhaust manifold (usually drivers side). Both very common. Try to narrow it down by using a section of heater hose as a stethascope.
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Joined: Dec 2003
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My '93 351W has a leaking manifold on the drivers side that you can't really hear it at idle. It's much more apparent when accelerating. One good piece of advice someone gave me to determine that it was an exhaust leak was to pay attention to how the sound was impacted by acceleration/deceleration. For example, if you hear the sound, immediately release pressure from the accelerator and see what happens. If it's mechanical, the sound should stay pretty much the same. If it disappears, it's probably related to the exhaust system.
If it is manifold related, it should become very apparent when using a stethoscope. The sound will be similar to that made by a vehicle idling with no muffler (deep, throaty sound).
If it is manifold related, it should become very apparent when using a stethoscope. The sound will be similar to that made by a vehicle idling with no muffler (deep, throaty sound).
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Joined: Apr 2004
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ok, my first thought was the all to common cracked exhaust manifold. then i thought you engine might be pinging.
but since this is a van chassis with a 351 there is a not to common situation where the pcv valve on the 5.8l with rattle due to a loss of vacuum flow, i think there is a tsb. can't remember. even though you have a 302 this might still apply.
if it is more on the passanger side then right exh. manifold, egr pipe leaking and pcv are all candidates.
take the "dog house" off and have someone drive while you check for the source
but since this is a van chassis with a 351 there is a not to common situation where the pcv valve on the 5.8l with rattle due to a loss of vacuum flow, i think there is a tsb. can't remember. even though you have a 302 this might still apply.
if it is more on the passanger side then right exh. manifold, egr pipe leaking and pcv are all candidates.
take the "dog house" off and have someone drive while you check for the source
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