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Low spring rates, incorrect spring heights and inappropriate replacements from previous rebuilds can lead to low base line pressure. The Sonnax replacement spring 77917-08 provides a resultant idle base line pressure of 72 psi, and 82-85 psi cracking pressure, which is consistent with the OE orange spring
Low line pressure resulting from worn boost valves, a worn pump bore at the pressure regulator valve or pump pocket wear will not be corrected by this spring.
Symptoms:
Cause:
Low spring rates, incorrect spring heights and inappropriate replacements from previous rebuilds.Correction:
This replacement spring provides a resultant idle base line pressure of 72psi, consistent when compared to the OEM orange spring.You must login to post a review.
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