timing chain.

R

rockyracoon

10 Year Member

Nov 23, 2005

874

27

49

margate NJ

Mar 29, 2006

#1

• Mar 29, 2006

• #1

If my chain jumped a tooth or is stretched would my compression be affected.im thinking that the reason that my car is kinda sluggish is that the cam timing is off,however the results of a compression test showed all cylinders around 150 PSI.the car just has no guts.It has been fully tuned up,timing st at 14*spout out,passed cylinder balance test,cleaned mass air,set TPS,no codes in memory or for engine running.fuel PSI is 33PSI regulator vac line on and around 43 with line off,however pressure dies immed when engine is shut off.

 

vikingpower

New Member

Dec 6, 2004

656

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0

CWU Ellensburg, WA

Mar 29, 2006

#2

• Mar 29, 2006

• #2

The factory timing set is pretty stout. It is highly unlikely that's your problem. The chain is made of steel, not rubber. It's not possible for it to stretch enough to 'jump a tooth'. Dont take any more advise from the person that told you that, they dont know what they're talking about!

 

bill302

Active Member

Nov 2, 2005

2,131

1

46

alabama,gadsden

Mar 29, 2006

#3

• Mar 29, 2006

• #3

does the motor ping during acceleration and you say timing st at 14*spout out.this is a little unclear you did reinstall the spout after you set the timing.and was fuel filter replaced during tune up.

 

vristang

15 Year Member

Mar 31, 2005

4,933

101

124

Seattle

Mar 29, 2006

#4

• Mar 29, 2006

• #4

What happens to the pressure when the engine is shut off?

 

J

JRPony

New Member

Jun 10, 2005

83

0

0

Las Vegas, NV

Mar 29, 2006

#5

• Mar 29, 2006

• #5

vikingpower said:

The factory timing set is pretty stout. It is highly unlikely that's your problem. The chain is made of steel, not rubber. It's not possible for it to stretch enough to 'jump a tooth'. Dont take any more advise from the person that told you that, they dont know what they're talking about!

Click to expand...

Actually, it is possible for a chain to stretch to the point where it will skip a tooth.
Also, a better way to check to fuel pressure is to hook up the gauge, turn the key (engine off) and watch the pressure. When the pump turns on it should build to approx 40 psi and when the pump shuts off, the pressure should maintain. Then start the car and watch your fuel pressure. If possible, tape the gauge to your windshield and drive around and watch the fuel pressure. Also after shutting the key off, the fuel pressure should maintain. If it doesn't then either the pressure regulator or the pump itself could be at fault.

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

33

129

Mar 30, 2006

#6

• Mar 30, 2006

• #6

I agree with JR but would add that some aftermarket AFPR's bleed pressure off almost immediately once the car is shut off. Just something to remember.

 

R

rockyracoon

10 Year Member

Nov 23, 2005

874

27

49

margate NJ

Mar 30, 2006

#7

• Mar 30, 2006

• #7

timing set with spout out then reinstalled.no pinging @ 14*.new fuel filter.I was told byanother member that if the pressure does not maintain then the bypass in the f/p is not working correctly and that makes sense cause my car takes up to 7 revolutions to start.I have personally seen timing chains stretch to the point of making the car run sluggish or even jump time.

 

J

JRPony

New Member

Jun 10, 2005

83

0

0

Las Vegas, NV

Mar 30, 2006

#8

• Mar 30, 2006

• #8

rockyracoon said:

.I was told byanother member that if the pressure does not maintain then the bypass in the f/p is not working correctly and that makes sense cause my car takes up to 7 revolutions to start.

Click to expand...

There is a check valve in the fuel pump that can fail that will also allow pressure to drop after the pump has shut off.